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59/14 = (-1/2)*x+(3/7)*x+5 // - (-1/2)*x+(3/7)*x+5
59/14-((-1/2)*x)-((3/7)*x)-5 = 0
(1/2)*x+(-3/7)*x+59/14-5 = 0
1/14*x-11/14 = 0 // + 11/14
1/14*x = 11/14 // : 1/14
x = 11/14/1/14
x = 11
x = 11
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