Answers

Add 20/4 and 84/8

1^st number: 5 0/4, 2^nd number: 10 4/8

20/4 + 84/8 is 31/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 8 is 8
   
   Next, find the equivalent fraction of both fractional numbers with denominator 8
2. For the 1st fraction, since 4 × 2 = 8,
   20/4 = 20 × 2/4 × 2 = 40/8
3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
   84/8 = 84 × 1/8 × 1 = 84/8
4. Add the two like fractions:
   40/8 + 84/8 = 40 + 84/8 = 124/8
5. 124/8 simplified gives 31/2
6. So, 20/4 + 84/8 = 31/2
   In mixed form: 151/2

MathStep (Works offline)

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

Related: ⁴⁰/₄+⁸⁴/₈ ²⁰/₈+⁸⁴/₈ ²⁰/₄+⁸⁴/₁₆ ⁶⁰/₄+⁸⁴/₈ ²⁰/₁₂+⁸⁴/₈ ²⁰/₄+⁸⁴/₂₄ ²⁰/₄+⁸⁴/₄₀ ²⁰/₂₈+⁸⁴/₈ ²⁰/₄+⁸⁴/₅₆

Add Fractions Calculator