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9( - 1 - 2x) + 12(x - 3) = 7 - 2(9 - 5x)
- 9 - 18x + 12x - 36 = 7 - 18 + 10x
- 9 - 36 - 7 + 18 = 10x + 18x - 12x
- 45 - 7 + 18 = 28x - 12x
- 52 + 18 = 16x
- 34 = 16x
- 34:2/16:2 = x
- 17/8 = x