Answers

Add 70/98 and 21/20

1^st number: 70/98, 2^nd number: 1 1/20

70/98 + 21/20 is 247/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 98 × 10 = 980,
   70/98 = 70 × 10/98 × 10 = 700/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   21/20 = 21 × 49/20 × 49 = 1029/980
4. Add the two like fractions:
   700/980 + 1029/980 = 700 + 1029/980 = 1729/980
5. 1729/980 simplified gives 247/140
6. So, 70/98 + 21/20 = 247/140
   In mixed form: 1107/140

MathStep (Works offline)

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

Related: ⁷⁰/₉₈+⁴²/₂₀ ⁷⁰/₉₈+²¹/₄₀ ⁷⁰/₉₈+⁶³/₂₀ ⁷⁰/₉₈+²¹/₆₀

Add Fractions Calculator