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x in (-oo:+oo)
(1/3)*(x-5) = 4*x-(3*(x-1))+20/3 // - 4*x-(3*(x-1))+20/3
(1/3)*(x-5)+3*(x-1)-(4*x)-(20/3) = 0
(1/3)*(x-5)+3*(x-1)-4*x-20/3 = 0
1/3*(x-5)+3*(x-1)-4*x-20/3 = 0
(1/3*3*(x-5))/3+(3^2*(x-1))/3+(-4*3*x)/3-20/3 = 0
1/3*3*(x-5)+3^2*(x-1)-4*3*x-20 = 0
10*x-12*x-20-14 = 0
-2*x-20-14 = 0
-2*x-34 = 0
(-2*x-34)/3 = 0
(-2*x-34)/3 = 0 // * 3
-2*x-34 = 0
-2*x-34 = 0 // + 34
-2*x = 34 // : -2
x = 34/(-2)
x = -17
x = -17
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