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(6/7)*x+5 = 149/28 // - 149/28
(6/7)*x-(149/28)+5 = 0
(6/7)*x-149/28+5 = 0
6/7*x-9/28 = 0 // + 9/28
6/7*x = 9/28 // : 6/7
x = 9/28/6/7
x = 3/8
x = 3/8
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