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(1/3)*x-(3/4) = 8/12 // - 8/12
(1/3)*x-(3/4)-(8/12) = 0
(1/3)*x-3/4-2/3 = 0
1/3*x-17/12 = 0 // + 17/12
1/3*x = 17/12 // : 1/3
x = 17/12/1/3
x = 17/4
x = 17/4
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