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(4/7)*x = 34*(2/5)-x // - 34*(2/5)-x
(4/7)*x+x-(34*(2/5)) = 0
(4/7)*x+x-68/5 = 0
11/7*x-68/5 = 0 // + 68/5
11/7*x = 68/5 // : 11/7
x = 68/5/11/7
x = 476/55
x = 476/55
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