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x in (-oo:+oo)
(1/5)*(x-7) = 4*x-(3*(x-1))+58/5 // - 4*x-(3*(x-1))+58/5
(1/5)*(x-7)+3*(x-1)-(4*x)-(58/5) = 0
(1/5)*(x-7)+3*(x-1)-4*x-58/5 = 0
1/5*(x-7)+3*(x-1)-4*x-58/5 = 0
(1/5*5*(x-7))/5+(3*5*(x-1))/5+(-4*5*x)/5-58/5 = 0
1/5*5*(x-7)+3*5*(x-1)-4*5*x-58 = 0
16*x-20*x-58-22 = 0
-4*x-58-22 = 0
-4*x-80 = 0
(-4*x-80)/5 = 0
(-4*x-80)/5 = 0 // * 5
-4*x-80 = 0
-4*x-80 = 0 // + 80
-4*x = 80 // : -4
x = 80/(-4)
x = -20
x = -20
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