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(3/4)*x+3/4 = 15/14 // - 15/14
(3/4)*x+3/4-(15/14) = 0
(3/4)*x+3/4-15/14 = 0
3/4*x-9/28 = 0 // + 9/28
3/4*x = 9/28 // : 3/4
x = 9/28/3/4
x = 3/7
x = 3/7
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