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(2*x)/5-1 = (5*x-11)/4 // - (5*x-11)/4
(2*x)/5-((5*x-11)/4)-1 = 0
(-1*(5*x-11))/4+(2*x)/5-1 = 0
(-1*5*(5*x-11))/(4*5)+(2*4*x)/(4*5)+(-1*4*5)/(4*5) = 0
2*4*x-1*5*(5*x-11)-1*4*5 = 0
55-17*x-20 = 0
35-17*x = 0
(35-17*x)/(4*5) = 0
(35-17*x)/(4*5) = 0 // * 4*5
35-17*x = 0
35-17*x = 0 // - 35
-17*x = -35 // : -17
x = -35/(-17)
x = 35/17
x = 35/17
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