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(3/4)*x = 31/2 // - 31/2
(3/4)*x-(31/2) = 0
(3/4)*x-31/2 = 0
3/4*x-31/2 = 0 // + 31/2
3/4*x = 31/2 // : 3/4
x = 31/2/3/4
x = 62/3
x = 62/3
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