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x in (-oo:+oo)
(6/5)*x-(3/2) = (7/10)*(x-(3/4)) // - (7/10)*(x-(3/4))
(6/5)*x-((7/10)*(x-(3/4)))-(3/2) = 0
(-7/10)*(x-3/4)+(6/5)*x-3/2 = 0
(6*x)/5-7/10*(x-3/4)-3/2 = 0
(-7/10*2*5*(x-3/4))/(2*5)+(2*6*x)/(2*5)+(-3*5)/(2*5) = 0
2*6*x-7/10*2*5*(x-3/4)-3*5 = 0
5*x-15+21/4 = 0
5*x-39/4 = 0
(5*x-39/4)/(2*5) = 0
(5*x-39/4)/(2*5) = 0 // * 2*5
5*x-39/4 = 0
5*x-39/4 = 0 // + 39/4
5*x = 39/4 // : 5
x = 39/4/5
x = 39/20
x = 39/20
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