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(3*x-2)/7 = (4*x-1)/5 // - (4*x-1)/5
(3*x-2)/7-((4*x-1)/5) = 0
(3*x-2)/7+(-1*(4*x-1))/5 = 0
(5*(3*x-2))/(5*7)+(-1*7*(4*x-1))/(5*7) = 0
5*(3*x-2)-1*7*(4*x-1) = 0
-13*x-3 = 0
(-13*x-3)/(5*7) = 0
(-13*x-3)/(5*7) = 0 // * 5*7
-13*x-3 = 0
-13*x-3 = 0 // + 3
-13*x = 3 // : -13
x = 3/(-13)
x = -3/13
x = -3/13
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