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x in (-oo:+oo)
(1/3)*x-((1/4)*(x-5)) = 4*x // - 4*x
(1/3)*x-((1/4)*(x-5))-(4*x) = 0
(-1/4)*(x-5)+(1/3)*x-4*x = 0
x/3-1/4*(x-5)-4*x = 0
(-1/4*3*(x-5))/3+x/3+(-4*3*x)/3 = 0
x-1/4*3*(x-5)-4*3*x = 0
1/4*x-12*x+15/4 = 0
15/4-47/4*x = 0
(15/4-47/4*x)/3 = 0
(15/4-47/4*x)/3 = 0 // * 3
15/4-47/4*x = 0
15/4-47/4*x = 0 // - 15/4
-47/4*x = -15/4 // : -47/4
x = -15/4/(-47/4)
x = 15/47
x = 15/47
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