Answers

Add 60/21 and 30/80

1^st number: 2 18/21, 2^nd number: 30/80

60/21 + 30/80 is 181/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 21 × 80 = 1680,
   60/21 = 60 × 80/21 × 80 = 4800/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   30/80 = 30 × 21/80 × 21 = 630/1680
4. Add the two like fractions:
   4800/1680 + 630/1680 = 4800 + 630/1680 = 5430/1680
5. 5430/1680 simplified gives 181/56
6. So, 60/21 + 30/80 = 181/56
   In mixed form: 313/56

MathStep (Works offline)

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

Related: ⁶⁰/₂₁+⁶⁰/₈₀ ⁶⁰/₄₂+³⁰/₈₀ ⁶⁰/₂₁+⁹⁰/₈₀ ⁶⁰/₆₃+³⁰/₈₀

Add Fractions Calculator