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x in (-oo:+oo)
(-3/4)*(24-(12*x)) = 0
(-3/4)*(24-12*x) = 0
-3/4*(24-12*x) = 0
( -3/4 )
-3/4 = 0
x belongs to the empty set
( 24-12*x )
24-12*x = 0 // - 24
-12*x = -24 // : -12
x = -24/(-12)
x = 2
x = 2
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