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(1/2)*(2*x-1) = 5 // - 5
(1/2)*(2*x-1)-5 = 0
1/2*(2*x-1)-5 = 0
1/2*(2*x-1)-5 = 0
x-11/2 = 0
x-11/2 = 0
x-11/2 = 0 // + 11/2
x = 11/2
x = 11/2
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