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(2/5)*x-3 = (4/3)*(4*x-3) // - (4/3)*(4*x-3)
(2/5)*x-((4/3)*(4*x-3))-3 = 0
(-4/3)*(4*x-3)+(2/5)*x-3 = 0
(2*x)/5-4/3*(4*x-3)-3 = 0
(-4/3*5*(4*x-3))/5+(2*x)/5+(-3*5)/5 = 0
2*x-4/3*5*(4*x-3)-3*5 = 0
20-74/3*x-15 = 0
5-74/3*x = 0
(5-74/3*x)/5 = 0
(5-74/3*x)/5 = 0 // * 5
5-74/3*x = 0
5-74/3*x = 0 // - 5
-74/3*x = -5 // : -74/3
x = -5/(-74/3)
x = 15/74
x = 15/74
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