Answers

Add 81/70 and 10/20

1^st number: 1 11/70, 2^nd number: 10/20

81/70 + 10/20 is 58/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   81/70 = 81 × 2/70 × 2 = 162/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   10/20 = 10 × 7/20 × 7 = 70/140
4. Add the two like fractions:
   162/140 + 70/140 = 162 + 70/140 = 232/140
5. 232/140 simplified gives 58/35
6. So, 81/70 + 10/20 = 58/35
   In mixed form: 123/35

MathStep (Works offline)

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

Related: ⁸¹/₇₀+¹⁰/₄₀ ⁸¹/₇₀+³⁰/₂₀ ⁸¹/₇₀+¹⁰/₆₀ ⁸¹/₇₀+⁵⁰/₂₀ ⁸¹/₇₀+⁷⁰/₂₀

Add Fractions Calculator