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x in (-oo:+oo)
6-((1/4)*(8*x+12)) = 2*x // - 2*x
6-((1/4)*(8*x+12))-(2*x) = 0
(-1/4)*(8*x+12)-2*x+6 = 0
6-1/4*(8*x+12)-2*x = 0
6-1/4*(8*x+12)-2*x = 0
6-4*x-3 = 0
3-4*x = 0
3-4*x = 0
3-4*x = 0 // - 3
-4*x = -3 // : -4
x = -3/(-4)
x = 3/4
x = 3/4
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