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(3*x-4)/5+7 = (2*x)/4 // - (2*x)/4
(3*x-4)/5-((2*x)/4)+7 = 0
(3*x-4)/5+(-1/2)*x+7 = 0
(3*x-4)/5-x/2+7 = 0
(2*(3*x-4))/(2*5)+(5*(-x))/(2*5)+(2*5*7)/(2*5) = 0
2*(3*x-4)+5*(-x)+2*5*7 = 0
x-8+70 = 0
x+62 = 0
(x+62)/(2*5) = 0
(x+62)/(2*5) = 0 // * 2*5
x+62 = 0
x+62 = 0 // - 62
x = -62
x = -62
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