Answers

Add 14/70 and 80/20

1^st number: 14/70, 2^nd number: 4 0/20

14/70 + 80/20 is 21/5.

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,
   14/70 = 14 × 2/70 × 2 = 28/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   80/20 = 80 × 7/20 × 7 = 560/140
4. Add the two like fractions:
   28/140 + 560/140 = 28 + 560/140 = 588/140
5. 588/140 simplified gives 21/5
6. So, 14/70 + 80/20 = 21/5
   In mixed form: 41/5

MathStep (Works offline)

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

Related: ²⁸/₇₀+⁸⁰/₂₀ ¹⁴/₇₀+⁸⁰/₄₀ ⁴²/₇₀+⁸⁰/₂₀ ¹⁴/₇₀+⁸⁰/₆₀ ⁹⁸/₇₀+⁸⁰/₂₀

Add Fractions Calculator