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Solving One-Step Equations. Unit 10. To Solve an Equation. Isolate the variable – get the letter by itself Use the Inverse Operation to isolate the variable. Addition Subtraction Multiplication Division. Multiplication.
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Solving One-Step Equations Unit 10
To Solve an Equation • Isolate the variable – get the letter by itself • Use the Inverse Operationto isolate the variable. • Addition Subtraction • Multiplication Division
Multiplication • when a number sits next to a variable with nothing in between the two, the operation is multiplication. • EX: 2x=16
Example: Number to move: the “2” 2x = 16 2 2 Operation being used: “x” x = 8 Opposite of “x”: “”
Divide each side by negative 3 -3x = 21 -3 -3 x = -7
Division When a number is written as a fraction, the operation is division.
Number to move: the “2” x = 8 2 Operation being used: “” Opposite of “”: “x”
x = 8 (2) (2) 2 Multiply each side by 2 x = 16
Balance • http://nlvm.usu.edu/en/nav/frames_asid_201_g_3_t_2.html?open=instructions&from=category_g_3_t_2.html
Homework Page # http://www.brainpop.com/math/algebra/equationswithvariables/