Answer Key
1. 6x - 2 
10
6x 12
x
2
2. 9x - 3
2x +18
7x - 3 18
7x 21
x 3
3. -4 4x
+ 4 24
0 4x
20
0
x
5
4. 3x + 3 -6
or 5x - 4 21
3x -9
___ 5x 25
x
-3
___ x 5
