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x in (-oo:+oo)
-(3*x)-3/4 = -11/4 // + -11/4
-(3*x)-3/4-(-11/4) = 0
11/4-3*x-3/4 = 0
2-3*x = 0 // - 2
-3*x = -2 // : -3
x = -2/(-3)
x = 2/3
x = 2/3
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