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2x - 12 + 6 = 3x - 3 - 10
2x - 6 = 3x - 13
x = 7
2) 7x - 5(2x + 3) = 4 - (2x + 6)
7x - 10x - 15 = 4 - 2x - 6
- 3x - 15 = - 2x - 2
- x = 13
x = - 13
2x - 3x = -3 -10 +12 -6
-x = -7
x = 7
2.
3.