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x in (-oo:+oo)
6*((-3/8)*x+3)-2*x = -12 // + 12
6*((-3/8)*x+3)-2*x+12 = 0
6*(3-3/8*x)-2*x+12 = 0
6*(3-3/8*x)-2*x+12 = 0
12-17/4*x+18 = 0
30-17/4*x = 0
30-17/4*x = 0
30-17/4*x = 0 // - 30
-17/4*x = -30 // : -17/4
x = -30/(-17/4)
x = 120/17
x = 120/17
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