Answers

Add 70/8 and 42/84

1^st number: 8 6/8, 2^nd number: 42/84

70/8 + 42/84 is 37/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 84 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 8 × 21 = 168,
   70/8 = 70 × 21/8 × 21 = 1470/168
3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
   42/84 = 42 × 2/84 × 2 = 84/168
4. Add the two like fractions:
   1470/168 + 84/168 = 1470 + 84/168 = 1554/168
5. 1554/168 simplified gives 37/4
6. So, 70/8 + 42/84 = 37/4
   In mixed form: 91/4

MathStep (Works offline)

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

Related: ⁷⁰/₁₆+⁴²/₈₄ ⁷⁰/₂₄+⁴²/₈₄ ⁷⁰/₄₀+⁴²/₈₄ ⁷⁰/₅₆+⁴²/₈₄

Add Fractions Calculator