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x in (-oo:+oo)
-11 = (5/12)*x+4 // - (5/12)*x+4
-((5/12)*x)-11-4 = 0
(-5/12)*x-11-4 = 0
-5/12*x-15 = 0 // + 15
-5/12*x = 15 // : -5/12
x = 15/(-5/12)
x = -36
x = -36
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