Use the eTools below to help solve the problems.
Click the link at right for the full version of the eTool: AC 3-13a HW eTool
Flip subtraction to addition.
Remove zero pairs.
Combine like terms.
Remove an x-tile from both sides.
Add 2 to both sides.
Divide by 2 on both sides.
2x + 3 + (−x) + 1 = 2x + (−2) + x
2x + (−x) + 3 + 1 = 2x + x + (−2)
x + 3 + 1 = 2x + x + (−2)
x + 4 = 3x − 2
4 = 2x − 2
6 = 2x
3 = x
Follow the steps in part (a).
Click the link at right for the full version of the eTool: AC 3-13b HW eTool