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x in (-oo:+oo)
X/4+3 = x/5-8 // - x/5-8
X/4-(x/5)+3+8 = 0
1/4*X-1/5*x+11 = 0 // - 1/4*X+11
-1/5*x = -(1/4*X+11) // : -1/5
x = (-(1/4*X+11))/(-1/5)
x = 5*(1/4*X+11)
x = 5*(1/4*X+11)
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