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x in (-oo:+oo)
x+1 = 4*x+37 // - 4*x+37
x-(4*x)-37+1 = 0
x-4*x-37+1 = 0
-3*x-36 = 0 // + 36
-3*x = 36 // : -3
x = 36/(-3)
x = -12
x = -12
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