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(7/4)*x-(5/6) = (5/8)*(x-(2/3)) // - (5/8)*(x-(2/3))
(7/4)*x-((5/8)*(x-(2/3)))-(5/6) = 0
(-5/8)*(x-2/3)+(7/4)*x-5/6 = 0
(7*x)/4-5/8*(x-2/3)-5/6 = 0
(-5/8*4*6*(x-2/3))/(4*6)+(6*7*x)/(4*6)+(-5*4)/(4*6) = 0
6*7*x-5/8*4*6*(x-2/3)-5*4 = 0
27*x-20+10 = 0
27*x-10 = 0
(27*x-10)/(4*6) = 0
(27*x-10)/(4*6) = 0 // * 4*6
27*x-10 = 0
27*x-10 = 0 // + 10
27*x = 10 // : 27
x = 10/27
x = 10/27
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