Answer:
x = 3
Explanation:
8 + 4x = 9x - 7
8 + 4x - 9x = 9x - 9x - 7
8 - 5x = - 7
8 - 8 - 5x = - 7 - 8
- 5x = - 15
- 5x ÷ - 5 = - 15 ÷ - 5
4x - 9x = -5x
-7 - 8= -15
-5x / -15 = 3
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