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(2*x)/7-x+1+4 = 27/14 // - 27/14
(2*x)/7-x-(27/14)+1+4 = 0
(2*x)/7-x-27/14+1+4 = 0
43/14-5/7*x = 0 // - 43/14
-5/7*x = -43/14 // : -5/7
x = -43/14/(-5/7)
x = 43/10
x = 43/10
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