isabelly6840 16/01/2014 A) x = 72 10 5 5x = 72 * 10 5x = 720 x = 720 ÷ 5 x = 144 b) 9 = 27 y 3 27y = 9 * 3 27y = 27 y = 27 ÷ 27 y = 1
isabelly6840
A)
x = 72
10 5
5x = 72 * 10
5x = 720
x = 720 ÷ 5
x = 144
b)
9 = 27
y 3
27y = 9 * 3
27y = 27
y = 27 ÷ 27
y = 1