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(5/7)*x+1/4 = 227/28 // - 227/28
(5/7)*x+1/4-(227/28) = 0
(5/7)*x+1/4-227/28 = 0
5/7*x-55/7 = 0 // + 55/7
5/7*x = 55/7 // : 5/7
x = 55/7/5/7
x = 11
x = 11
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