### Home > CCA > Chapter A > Lesson A.1.1 > ProblemA-6

A-6.

Suppose you put one of your $x$-tiles and two unit tiles with another pile of three $x$-tiles and five unit tiles. What is in this new pile? Write it as a sum.

Write down the number and types of tiles.

$x + 2 + 3x + 5$

Combine like terms.

$4x + 7$

Explore using the eTool below.
Click on the link at right for the full eTool version: CCA A-6 HW eTool