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x in (-oo:+oo)
(x+3)/5-((2*x+1)/4) = 2 // - 2
(x+3)/5-((2*x+1)/4)-2 = 0
(x+3)/5+(-1*(2*x+1))/4-2 = 0
(4*(x+3))/(4*5)+(-1*5*(2*x+1))/(4*5)+(-2*4*5)/(4*5) = 0
4*(x+3)-1*5*(2*x+1)-2*4*5 = 0
7-6*x-40 = 0
-6*x-33 = 0
(-6*x-33)/(4*5) = 0
(-6*x-33)/(4*5) = 0 // * 4*5
-6*x-33 = 0
-6*x-33 = 0 // + 33
-6*x = 33 // : -6
x = 33/(-6)
x = -11/2
x = -11/2
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