12 x [ X - 2] = 3 x X + 12
12 x X - 12 x 2 = 3 x X + 12
12 x X - 24 = 3 x X + 12
12 x X - 3 x X = 12 + 24
9 x X = 36
X = 36 : 9
X = 4
12 x (X-2) = 3X + 12
12X - 24 = 3X +12
12X - 3X= 12 +24
(12-3) X= 36
9X = 36
X = 4
12x(X-2)=3xX+12
12X-12x2=3X+12
12X-24=3X+12
12X-3X=12+24
9X=12+24
9X=36
X=36:9
X=4
12 x [ X - 2] = 3 x X + 12
12 x X - 12 x 2 = 3 x X + 12
12 x X - 24 = 3 x X + 12
12 x X - 3 x X = 12 + 24
9 x X = 36
X = 36 : 9
X = 4