Andrew wants to rename 2/7 and 3/4 using a common denominator. which of the following shows these fractions renamed correctly.
a 8/28 and 21/28
b 2/28 and 3/28
c 4/28 and 6/28
d 2/7 and 3/7
a 8/28 and 21/28
b 2/28 and 3/28
c 4/28 and 6/28
d 2/7 and 3/7