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Today’s Lesson:

Today’s Lesson:. What: Two -step equations Why: To solve both multiplication and division two-step equations. What are Two-Step Equations??

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Today’s Lesson:

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  1. Today’s Lesson: What: Two-step equations Why: To solve both multiplication and division two-step equations.

  2. What are Two-Step Equations?? Two-Step Equations are equations that have ________________________ operations . In other words, there are TWO numbers on the same side with “x.” two To Solve a Two-Step Equation: Step One: Add or Subtract (Zero Pairs) to get rid of the __________________ . Step Two: Multiply or Divide to get rid of number closest to “x.” constant

  3. EXAMPLES: Example: 3x + 2 = 26 -2 -2. . . (add “-2” toboth sides to make zero pair) 3x = 24 . . . (re-write equation) 3 3. . . (divide by 3 on both sides) x = 8 Example: + 3 = 13 -3 - 3 . . . (add “-3” to both sides to make zero pair) = 10 . . . (re-write equation) (-2) = 10(-2) . . . (multiply by -2 on both sides) x = -20

  4. Multiplication Two-Step Equations: x = 4 x = - 7 x = 10 x = -25

  5. Your turn: x = 10 x = 5

  6. Division two-step equations: x = 36 x = -24 x = -88 x = -150

  7. Your turn: x = 50 x = 75

  8. END OF LESSON The next slides are student copies of the notes for this lesson. These notes were handed out in class and filled-in as the lesson progressed. NOTE: The last slide(s) in any lesson slideshow (entitled “Practice Work”) represent the homework assigned for that day.

  9. Math-7 NOTES DATE: ______/_______/_______ NAME: What: Two-step equations Why: To solve both multiplication and division two-step equations. What are Two-Step Equations?? Two-Step Equations are equations that have ________________________ operations . In other words, there are TWO numbers on the same side with “x.” To Solve a Two-Step Equation: Step One: Add or Subtract (Zero Pairs) to get rid of the ____________________________________ . Step Two: Multiply or Divide to get rid of number closest to “x.” Example: 3x + 2 = 26 -2 -2 . . . (add “-2” toboth sides to make zero pair) 3x = 24. . . (re-write equation) 3 3 . . . (divide by 3 on both sides) x = 8 Example: _x_ + 3 = 13 -2 -3 - 3 . . . (add “-3” toboth sides to make zero pair) _x_ = 10 . . . (re-write equation) -2 (-2) _x_ = 10(-2). . . (multiply by -2 on both sides) -2 x = -20 Multiplication Two-Step Equations:

  10. Your turn: Division two-step equations: Your turn:

  11. NAME:_______________________________________________________________________________DATE: _____/_____/__________ Math-7 PRACTICE “ two-step Equations”

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