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(1/2)*x-5 = 3/2-5 // - 3/2-5
(1/2)*x-(3/2)-5+5 = 0
(1/2)*x-3/2-5+5 = 0
1/2*x-3/2 = 0 // + 3/2
1/2*x = 3/2 // : 1/2
x = 3/2/1/2
x = 3
x = 3
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