Answers

Add 70/28 and 42/40

1^st number: 2 14/28, 2^nd number: 1 2/40

70/28 + 42/40 is 71/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 28 × 10 = 280,
   70/28 = 70 × 10/28 × 10 = 700/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   42/40 = 42 × 7/40 × 7 = 294/280
4. Add the two like fractions:
   700/280 + 294/280 = 700 + 294/280 = 994/280
5. 994/280 simplified gives 71/20
6. So, 70/28 + 42/40 = 71/20
   In mixed form: 311/20

MathStep (Works offline)

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

Related: ⁷⁰/₂₈+⁸⁴/₄₀ ⁷⁰/₅₆+⁴²/₄₀ ⁷⁰/₂₈+⁴²/₈₀ ⁷⁰/₈₄+⁴²/₄₀

Add Fractions Calculator