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x in (-oo:+oo)
4*(x/2+1) = 2 // - 2
4*(x/2+1)-2 = 0
4*(1/2*x+1)-2 = 0
4*(1/2*x+1)-2 = 0
2*x+2 = 0
2*x+2 = 0
2*x+2 = 0 // - 2
2*x = -2 // : 2
x = -2/2
x = -1
x = -1
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