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(1/2)*(x-8) = 12 // - 12
(1/2)*(x-8)-12 = 0
1/2*(x-8)-12 = 0
1/2*(x-8)-12 = 0
1/2*x-16 = 0
1/2*x-16 = 0
1/2*x-16 = 0 // + 16
1/2*x = 16 // : 1/2
x = 16/1/2
x = 32
x = 32
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