CPM Homework Help : MC2 Problem 6-117

Shaded tile is plus 1. Tile is negative 1. Write the expression as shown on the expression mats, then simplify by making zeros and combining like terms. .

Hint (a):
Remove all zero pairs from the mat.
More Help (a):
How many of each tile are you left with?
Answer (a):
$−x − 1$

Hint (b):
See part (a).

Use the eTool below to simplify the expressions.
Click the link at right for the full version of the eTool: MC2 6-117 HW eTool