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(1/2)*x-(5/1) = 9/2 // - 9/2
(1/2)*x-(5/1)-(9/2) = 0
(1/2)*x-9/2-5 = 0
1/2*x-19/2 = 0 // + 19/2
1/2*x = 19/2 // : 1/2
x = 19/2/1/2
x = 19
x = 19
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