Step-by-step explanation:
1. 9(x - 2) = 7x + 5
9x - 18 = 7x + 5
-7x. -7x
2x - 18 = 5
+18. +18
2x = 23
÷ ÷
2x. 2x
x = 11.5
2. 2x + 8 = -3.5x + 19
+3.5x. +3.5x
5.5x + 8 = 19
-8. -8
5.5x = 11
÷ ÷
5.5x. 5.5x
x = 2
3. 3(3x + 2) -2x = 7x + 6
9x + 6 - 2x = 7x + 6
7x + 6 = 7x + 6
-6. -6
7x = 7x
-7x. - 7x
0 = 0
