Answers

Add 70/64 and 21/63

1^st number: 1 6/64, 2^nd number: 21/63

70/64 + 21/63 is 137/96.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 63 is 4032
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4032
2. For the 1st fraction, since 64 × 63 = 4032,
   70/64 = 70 × 63/64 × 63 = 4410/4032
3. Likewise, for the 2nd fraction, since 63 × 64 = 4032,
   21/63 = 21 × 64/63 × 64 = 1344/4032
4. Add the two like fractions:
   4410/4032 + 1344/4032 = 4410 + 1344/4032 = 5754/4032
5. 5754/4032 simplified gives 137/96
6. So, 70/64 + 21/63 = 137/96
   In mixed form: 141/96

MathStep (Works offline)

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

Related: ⁷⁰/₆₄+⁴²/₆₃

Add Fractions Calculator