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(2*x)/7-(x/2)+2+3 = 13/14 // - 13/14
(2*x)/7-(x/2)-(13/14)+2+3 = 0
(2*x)/7-(x/2)-13/14+2+3 = 0
57/14-3/14*x = 0 // - 57/14
-3/14*x = -57/14 // : -3/14
x = -57/14/(-3/14)
x = 19
x = 19
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