Răspuns :
-3•[18-(x-3)•(-4)]-6=0
-3•[18-(x-3)•(-4)]=6
18-(x-3)•(-4)=(-2)
(x-3)•(-4)=18+2
(x-3)•(-4)=20
x-3=(-5)
x=3-5
x=(-2)
Răspuns:
{-3•[18-(x-3)•(-4)]-6}:(-2)=0
-3•[18-(x-3)•(-4)]-6=0·2
-3[18-(x-3)·(-4)]=0+6
18-(x-3)·(-4)=6:(-3)
(x-3)·(-4)=18+2
x-3=20:(-4)
x=-5+3
x=-2