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(4*x)/7 = 43-(2*x) // - 43-(2*x)
(4*x)/7+2*x-43 = 0
18/7*x-43 = 0 // + 43
18/7*x = 43 // : 18/7
x = 43/18/7
x = 301/18
x = 301/18
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