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x in (-oo:+oo)
(2/3)*(x-4) = (3/5)*(5*x-3) // - (3/5)*(5*x-3)
(2/3)*(x-4)-((3/5)*(5*x-3)) = 0
(2/3)*(x-4)+(-3/5)*(5*x-3) = 0
2/3*(x-4)-3/5*(5*x-3) = 0
2/3*(x-4)-3/5*(5*x-3) = 0
-7/3*x-13/15 = 0
-7/3*x-13/15 = 0
-7/3*x-13/15 = 0 // + 13/15
-7/3*x = 13/15 // : -7/3
x = 13/15/(-7/3)
x = -13/35
x = -13/35
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