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x in (-oo:+oo)
(x+2)/2+(x-3)/3 = 20 // - 20
(x+2)/2+(x-3)/3-20 = 0
(3*(x+2))/(2*3)+(2*(x-3))/(2*3)+(-20*2*3)/(2*3) = 0
3*(x+2)+2*(x-3)-20*2*3 = 0
5*x-120 = 0
(5*x-120)/(2*3) = 0
(5*x-120)/(2*3) = 0 // * 2*3
5*x-120 = 0
5*x-120 = 0 // + 120
5*x = 120 // : 5
x = 120/5
x = 24
x = 24
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