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(5*x-2)/2-4 = (2*x-7)/9 // - (2*x-7)/9
(5*x-2)/2-((2*x-7)/9)-4 = 0
(5*x-2)/2+(-1*(2*x-7))/9-4 = 0
(9*(5*x-2))/(2*9)+(-1*2*(2*x-7))/(2*9)+(-4*2*9)/(2*9) = 0
9*(5*x-2)-1*2*(2*x-7)-4*2*9 = 0
41*x-72-4 = 0
41*x-76 = 0
(41*x-76)/(2*9) = 0
(41*x-76)/(2*9) = 0 // * 2*9
41*x-76 = 0
41*x-76 = 0 // + 76
41*x = 76 // : 41
x = 76/41
x = 76/41
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