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(2/7)*x+8 = 62/7 // - 62/7
(2/7)*x-(62/7)+8 = 0
(2/7)*x-62/7+8 = 0
2/7*x-6/7 = 0 // + 6/7
2/7*x = 6/7 // : 2/7
x = 6/7/2/7
x = 3
x = 3
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