answersLogoWhite

0

When figuring out what number goes both into 21 and 28, you should look at the factor paris.

21: 1 x 21, 3 x 7

28: 1, 28, 2 x 14, 4 x 7

7 goes into both 21 and 28.

User Avatar

Wiki User

10y ago

What else can I help you with?