Answers

Add 30/21 and 49/72

1^st number: 1 9/21, 2^nd number: 49/72

30/21 + 49/72 is 1063/504.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   30/21 = 30 × 24/21 × 24 = 720/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   49/72 = 49 × 7/72 × 7 = 343/504
4. Add the two like fractions:
   720/504 + 343/504 = 720 + 343/504 = 1063/504
5. So, 30/21 + 49/72 = 1063/504
   In mixed form: 255/504

MathStep (Works offline)

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

Related: ⁶⁰/₂₁+⁴⁹/₇₂ ³⁰/₂₁+⁹⁸/₇₂ ³⁰/₄₂+⁴⁹/₇₂ ⁹⁰/₂₁+⁴⁹/₇₂ ³⁰/₆₃+⁴⁹/₇₂

Add Fractions Calculator