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8x + 7 = 3x + 32
8x - 3x = 32 - 7
5x = 25
x = 5
no.2
4(x-2) = 12(x+5)
4x - 8 = 12x + 60
4x - 12x = 60 + 8
-8x = 68
x = -8.5