body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

4. Perimeter and Area in the Coordinate Plane

Continue to next subchapter

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

LHS-3x=RHS-3x

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

Subtract terms

x-9=5

LHS+9=RHS+9

x-9+9=5+9

Add terms

x=14

Subchapter links

Communicate Your Answer p.405

Monitoring Progress p.406-409

Exercises p.410-412