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x in (-oo:+oo)
(1/3)*x-4 = (3/4)*x+1 // - (3/4)*x+1
(1/3)*x-((3/4)*x)-4-1 = 0
(1/3)*x+(-3/4)*x-4-1 = 0
-5/12*x-5 = 0 // + 5
-5/12*x = 5 // : -5/12
x = 5/(-5/12)
x = -12
x = -12
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