### Home > CC4 > Chapter A > Lesson A.1.2 > Problem A-20

A-20.

Write and simplify the algebraic expression shown in each Expression Mat below. A-20a HW eTool (CPM), A-20b HW eTool (CPM) and A-20c HW eTool (CPM). Homework Help ✎a.

b.

c.

(2*x* − 3) − ( ? )

Use the algebra tiles below to help you simplify.

Click the link at right for the full version of the eTool: Int1 A-20a HW eTool.

Which tiles pairs make zeroes?

Use the algebra tiles below to help you simplify.

Click the link at right for the full version of the eTool: Int1 A-20b HW eTool.

−*x* − (*x* + 2)

= −2*x* − 2

Use the algebra tiles below to help you simplify.

Click the link at right for the full version of the eTool: Int1 A-20c HW eTool.