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x in (-oo:+oo)
(2-x)/2 = (-x-31)/3 // - (-x-31)/3
(2-x)/2-((-x-31)/3) = 0
(2-x)/2+(-1*(-x-31))/3 = 0
(3*(2-x))/(2*3)+(-1*2*(-x-31))/(2*3) = 0
3*(2-x)-1*2*(-x-31) = 0
68-x = 0
(68-x)/(2*3) = 0
(68-x)/(2*3) = 0 // * 2*3
68-x = 0
68-x = 0 // - 68
-x = -68 // * -1
x = 68
x = 68
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