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(3*x+2)/7+(2-x)/2 = 13/14 // - 13/14
(3*x+2)/7+(2-x)/2-(13/14) = 0
(3*x+2)/7+(2-x)/2-13/14 = 0
(2*14*(3*x+2))/(2*7*14)+(7*14*(2-x))/(2*7*14)+(-13*2*7)/(2*7*14) = 0
2*14*(3*x+2)+7*14*(2-x)-13*2*7 = 0
252-14*x-182 = 0
70-14*x = 0
(70-14*x)/(2*7*14) = 0
(70-14*x)/(2*7*14) = 0 // * 2*7*14
70-14*x = 0
70-14*x = 0 // - 70
-14*x = -70 // : -14
x = -70/(-14)
x = 5
x = 5
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