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x in (-oo:+oo)
(1/2)*(8*x+12) = 2 // - 2
(1/2)*(8*x+12)-2 = 0
1/2*(8*x+12)-2 = 0
1/2*(8*x+12)-2 = 0
4*x+4 = 0
4*x+4 = 0
4*x+4 = 0 // - 4
4*x = -4 // : 4
x = -4/4
x = -1
x = -1
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