Line up the shapes.
a. 2/8 = x/16
b. 12/4 = 18/x = y/8
c. 6/4=8/y=7/x
a. Cross multiply. 8x = 2*16
8x = 32
divide both sides by 8
x = 4
b. 12/4 = 18/x
cross multiply
12x = 18*4
12x = 72
divide both sides by 12
x = 6
12/4 = y/8
cross multiply
4y = 12*8
4y = 96
divide both sides by 4
y = 24
c. 6/4 = 8/y
cross multiply
6y = 8*4
6y = 32
divide both sides by 6
y = 32/6 = 16/3
6/4 = 7/x
cross multiply
6x = 7*4
6x = 28
divide both sides by 6
x = 14/3
