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(6*x+3)/7 = (2*x-4)/2 // - (2*x-4)/2
(6*x+3)/7-((2*x-4)/2) = 0
(6*x+3)/7+(-1*(2*x-4))/2 = 0
(2*(6*x+3))/(2*7)+(-1*7*(2*x-4))/(2*7) = 0
2*(6*x+3)-1*7*(2*x-4) = 0
34-2*x = 0
(34-2*x)/(2*7) = 0
(34-2*x)/(2*7) = 0 // * 2*7
34-2*x = 0
34-2*x = 0 // - 34
-2*x = -34 // : -2
x = -34/(-2)
x = 17
x = 17
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