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Section 3.2 Solving Equations Using Multiplication & Division Mr. Beltz & Mr. Sparks

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Goal: Solve linear equations using multiplication and division. Remember, Multiplication and Division are Inverse Properties.

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Same steps: ***Change Subtraction to Addition, take the Opposite of the next number.*** 1 st Draw a line underneath the equal sign. 2 nd Circle the variable (remember the sign to the left stays with the variable) 3 rd Do the Inverse Operation

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3x = 9 ---------- --------- 3 3 X = 3 ***Change Subtraction to Addition, take the Opposite of the next number.*** 1 st Draw a line underneath the equal sign. 2 nd Circle the variable (remember the sign to the left stays with the variable) 3 rd Do the Inverse Operation MULTIPLICATION

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Independent Practice 60 = 5x -3x = -9 -4x = 1

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Solutions 60 = 5x X = 12 -3x = -9X = 3 -4x = 1 X = -1 4

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X = 10 2 2*X 10 * 2 2 X = 20 ***Change Subtraction to Addition, take the Opposite of the next number.*** 1 st Draw a line underneath the equal sign. 2 nd Circle the variable (remember the sign to the left stays with the variable) 3 rd Do the Inverse Operation DIVISION

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Independent Practice X = 11 3 X = -2 4 7 = X 7

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Solutions: X = 11X = 33 3 X = -2X = -8 4 7 = XX = 49 7

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Practice Pg. 141 #6 -14

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