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-((7/8)*(x-56))-12 = 23 // - 23
-((7/8)*(x-56))-23-12 = 0
(-7/8)*(x-56)-23-12 = 0
-7/8*(x-56)-23-12 = 0
-7/8*(x-56)-23-12 = 0
26-7/8*x-12 = 0
14-7/8*x = 0
14-7/8*x = 0
14-7/8*x = 0 // - 14
-7/8*x = -14 // : -7/8
x = -14/(-7/8)
x = 16
x = 16
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