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Solving 2-step Equations With Addition or Subtraction and Division

Solving 2-step Equations With Addition or Subtraction and Division. Vocabulary Review. Expression: A mathematical phrase that combines numbers and/or variables using mathematical operations. ex. and Equation : A mathematical statement that says two expressions are equal.

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Solving 2-step Equations With Addition or Subtraction and Division

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  1. Solving 2-step Equations With Addition or Subtraction and Division

  2. Vocabulary Review • Expression: A mathematical phrase that combines numbers and/or variables using mathematical operations. ex. and • Equation: A mathematical statement that says two expressions are equal. ex. • Opposite Operations: addition and subtraction multiplication and division

  3. x is unknown and a, b, and c are real #s Division and Addition Remember: You want the variable on alone on one side of the equal sign and a constant on the other side. • Step 2 Multiplyboth sides of the equation by a. This will give you the solution to the equation. Step 1 Subtractc from both sides of the equation.

  4. x is unknown and a, b, and c are real #s Division and Addition Remember: You want the variable on alone on one side of the equal sign and a constant on the other side. • Step 2 Multiplyboth sides of the equation by a. This will give you the solution to the equation. Step 1 Subtractc from both sides of the equation.

  5. x is unknown and a, b, and c are real #s Division and Addition Remember: You want the variable on alone on one side of the equal sign and a constant on the other side. • Step 2 Multiplyboth sides of the equation by a. This will give you the solution to the equation. Step 1 Subtractc from both sides of the equation.

  6. Division and Addition What is the opposite of adding 5? Subtracting 5. First, get rid of +5 by subtracting 5 from both sides. - 5 -5 What is the opposite of dividing by 8? Multiplying by 8. 8* * 8 Next, multiply both sides by 8. The 8’s cancel out on the side with the variable. m= 2 * 8 m = 16 THE EQUATION IS SOLVED!!!!

  7. What is my first step? Click on one of the signs. Subtract 3 Add 3

  8. You Are Correct!!!!!!!!!!! - 3 -3

  9. What is your next move? Multiply 5 Divide 5

  10. Awesome!!! What is your solution? 11 30

  11. Excellent Job!!!! x = 6 * 5 x = 30 Move Ahead!!!

  12. Division and Subtraction x is unknown and a, b, and c are real #s Remember: You want a variable on one side of the equal sign and a constant on the other side. Step 1Addc to both sides of the equation. • Step 2Multiplyboth sides of the equation by a. This will give you the solution.

  13. Division and Subtraction x is unknown and a, b, and c are real #s Remember: You want a variable on one side of the equal sign and a constant on the other side. Step 1 Addc to both sides of the equation. • Step 2 Multiplyboth sides of the equation by a. This will give you the solution.

  14. Division and Subtraction x is unknown and a, b, and c are real #s Remember: You want a variable on one side of the equal sign and a constant on the other side. Step 1 Addc to both sides of the equation. • Step 2 Multiplyboth sides of the equation by a. This will give you the solution.

  15. Division and Subtraction What is the opposite of subtracting 3? Adding 3 First, get rid of -3 by adding 3 to both sides. +3 +3 What is the opposite of dividing by 6? 6* Multiplying by 6. *6 Next, multiply both sides by 6. The 6’s cancel out on the side with the variable. m= 11* 6 m = 66 THE EQUATION IS SOLVED!!!!

  16. Now, it’s your turn to try. What do you do first? Add 4 Subtract 4

  17. You Are Correct!!!!!!!!!!! + 4 +4

  18. What Should I Do Next? Divide 7 Multiply 7

  19. Awesome!!! What is your solution? 70 17

  20. You did fantastic work!!!!! X = 10*7=70 Move Ahead!!!

  21. x is unknown and a, b, and c are real #s Multiplication and Addition Remember: You want the variable on one side of the equal sign and a constant on the other side. Step 1 Subtractc from both sides of the the equation. Step 2 Multiplyboth sides of the equation by a get your solution.

  22. x is unknown and a, b, and c are real #s Multiplication and Addition Remember: You want the variable on one side of the equal sign and a constant on the other side. • Step 2 Divideboth sides of the equation by ato get your solution. Step 1 Subtractc from both sides of the equation.

  23. x is unknown and a, b, and c are real #s Multiplication and Addition Remember: You want the variable on one side of the equal sign and a constant on the other side. Step 1 Subtractc from both sides of the equation. Step 2 Divideboth sides of the equation by ato get your solution.

  24. Multiplication and Addition What is the opposite of adding 7? Subtracting 7. - 7 -7 First, get rid of +7 by subtracting 7 from both sides. What is the opposite of multiplying by 9? Dividing by 9. 9 9 Next, divide both sides by 9. The 9’s cancel out on the side with the variable. z= 18 9 z = 2 THE EQUATION IS SOLVED!!!!

  25. What is my first step? Try this one!!! Subtract 9 Add 9

  26. You Are Correct!!!!!!!!!!! - 9 - 9

  27. What’s Next? Multiply 5 Divide 5

  28. Awesome!!! What is your solution? 10 3

  29. Well Done!!!!! x = 15/5 =3 Move Ahead!!!

  30. Multiplication and Subtraction x is unknown and a, b, and c are real #s Remember: You want the variable on one side of the equal sign and a constant on the other side. • Step 2 Divideboth sides of the equation by a to get your solution. Step 1 Addc to both sides of the equation.

  31. Multiplication and Subtraction x is unknown and a, b, and c are real #s Remember: You want the variable on one side of the equal sign and a constant on the other side. • Step 2 Divideboth sides of the equation by a to get your solution. Step 1 Addc to both sides of the equation.

  32. Multiplication and Subtraction x is unknown and a, b, and c are real #s Remember: You want the variable on one side of the equal sign and a constant on the other side. • Step 2 Divideboth sides of the equation by a to get your solution. Step 1 Addc to both sides of the equation.

  33. Multiplication and Subtraction What is the opposite of subtracting 6? Adding 6. +6 +6 First, get rid of -6 by adding 6 to both sides. What is the opposite of multiplying by 10? Dividing by 10. 10 10 Next, divide both sides by 10. The 10’s cancel out on the side with the variable. b= 40 10 b = 4 THE EQUATION IS SOLVED!!!!

  34. What is my first step? Give this one a shot!!! Subtract 12 Add 12

  35. Terrific!!!!!!!!!!! +12 +12

  36. What’s Next? Multiply 7 Divide 7

  37. Amazing!!! What is your solution? 9 56

  38. x = 63/7 = 9 Excellent Work!!!! Great Job!!!

  39. Excellent Effort!!!!

  40. Click On One of the Styles of Equations For Review Division and Addition Multiplication and Addition Division and Subtraction Multiplication and Subtraction

  41. More Equation Stuff Check out this video, and this one. Also, this vid. When you’re done, test your knowledge by printing this quizand turning it in by the end of the period. The End

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