### Home > CC3 > Chapter 3 > Lesson 3.1.1 > Problem 3-7

3-7.

On your paper, write the equation represented on the Equation Mat at right. Simplify as much as possible and then solve for

Move all tiles in the "minus" region to the "plus" region by flipping the tiles and remove any zero pairs. Write the equation represented.

Solve for .

Use the eTool below to help solve the problem.

Click the link at right for the full version of the eTool: *3-7 HW eTool*