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(2/5)*x-3 = (3/4)*(4*x-3) // - (3/4)*(4*x-3)
(2/5)*x-((3/4)*(4*x-3))-3 = 0
(-3/4)*(4*x-3)+(2/5)*x-3 = 0
(2*x)/5-3/4*(4*x-3)-3 = 0
(-3/4*5*(4*x-3))/5+(2*x)/5+(-3*5)/5 = 0
2*x-3/4*5*(4*x-3)-3*5 = 0
45/4-13*x-15 = 0
-13*x-15/4 = 0
(-13*x-15/4)/5 = 0
(-13*x-15/4)/5 = 0 // * 5
-13*x-15/4 = 0
-13*x-15/4 = 0 // + 15/4
-13*x = 15/4 // : -13
x = 15/4/(-13)
x = -15/52
x = -15/52
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