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(6/7)*x+5 = 47/7 // - 47/7
(6/7)*x-(47/7)+5 = 0
(6/7)*x-47/7+5 = 0
6/7*x-12/7 = 0 // + 12/7
6/7*x = 12/7 // : 6/7
x = 12/7/6/7
x = 2
x = 2
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