Answers

Add 70/84 and 28/8

1^st number: 70/84, 2^nd number: 3 4/8

70/84 + 28/8 is 13/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 84 × 2 = 168,
   70/84 = 70 × 2/84 × 2 = 140/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   28/8 = 28 × 21/8 × 21 = 588/168
4. Add the two like fractions:
   140/168 + 588/168 = 140 + 588/168 = 728/168
5. 728/168 simplified gives 13/3
6. So, 70/84 + 28/8 = 13/3
   In mixed form: 41/3

MathStep (Works offline)

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

Related: ⁷⁰/₈₄+⁵⁶/₈ ⁷⁰/₈₄+²⁸/₁₆ ⁷⁰/₈₄+⁸⁴/₈ ⁷⁰/₈₄+²⁸/₂₄ ⁷⁰/₈₄+²⁸/₄₀ ⁷⁰/₈₄+²⁸/₅₆

Add Fractions Calculator