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Big Ideas Math Integrated I, 2016 View details

4. Perimeter and Area in the Coordinate Plane

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Exercise 39 Page 412

Gather all of the variable terms on one side of the equation and all of the constant terms on the other side.

x=14

Practice makes perfect

To solve an equation, we should first gather all of the variable terms on one side of the equation and all of the constant terms on the other side, using the Properties of Equality. In this case, we will start by subtracting 3x from both sides of the equation.

4x-9=3x+5

SubEqn

LHS-3x=RHS-3x

4x-9-3x=3x+5-3x

SubTerms

Subtract terms

x-9=5

AddEqn

LHS+9=RHS+9

x-9+9=5+9

AddTerms

Add terms