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Big Ideas Math: Modeling Real Life, Grade 6 View details

4. Writing Equations in Two Variables

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Exercise 1 Page 270

Use the Division Property of Equality to eliminate the multiplication.

x=9

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Division Property of Equality, we will divide both sides of the equation by 4. This will eliminate the multiplication and isolate x.

4x=36

DivEqn

.LHS /4.=.RHS /4.

4x/4=36/4

CrossCommonFac

Cross out common factors

4x/4=36/4

CancelCommonFac

Cancel out common factors

x=36/4

CalcQuot

Calculate quotient