Xx12=12000
X=12000:12
X=1000
X:50=1000
X=1000:50
X=20
Xx30=40+20
Xx30=60
X=60:30
X=2
X:20=40+40
X:20=80
X=80x20
X=1600
X x 12 =12000
x = 12000:12
x = 1000
X : 50 = 1000
X = 1000 x 50
X = 50000
X x 30 = 40 + 20
X x 30 = 60
X = 60 : 30
X = 2
X : 20 = 40 + 40
X : 20 = 80
X = 80 x 20
X = 1600
X x 12 = 12 000 X : 50 = 1000
X = 12 000 : 12 X = 1000 . 50
X = 1000 X = 50 000
X x 30 = 40 + 20 X : 20 = 40 + 40
X x 30 = 60 X : 20 = 80
X = 60 : 30 X = 80 x 20
X = 2 X = 1600
Xx12=12000
X=12000:12
X=1000
X:50=1000
X=1000:50
X=20
Xx30=40+20
Xx30=60
X=60:30
X=2
X:20=40+40
X:20=80
X=80x20
X=1600