Add 7/25 and 63/21, Solve 7/25 + 3 0/21 as a fraction

Add 7/25 and 63/21

1^st number: 7/25, 2^nd number: 3 0/21

7/25 + 63/21 is 82/25.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
7/25 = 7 × 21/25 × 21 = 147/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
63/21 = 63 × 25/21 × 25 = 1575/525
Add the two like fractions:
147/525 + 1575/525 = 147 + 1575/525 = 1722/525
1722/525 simplified gives 82/25
So, 7/25 + 63/21 = 82/25
In mixed form: 37/25

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad