Answers

Add 28/84 and 18/7

1^st number: 28/84, 2^nd number: 2 4/7

28/84 + 18/7 is 61/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   28/84 = 28 × 1/84 × 1 = 28/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   18/7 = 18 × 12/7 × 12 = 216/84
4. Add the two like fractions:
   28/84 + 216/84 = 28 + 216/84 = 244/84
5. 244/84 simplified gives 61/21
6. So, 28/84 + 18/7 = 61/21
   In mixed form: 219/21

MathStep (Works offline)

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

Related: ⁵⁶/₈₄+¹⁸/₇ ²⁸/₈₄+³⁶/₇ ²⁸/₈₄+¹⁸/₁₄ ²⁸/₈₄+⁵⁴/₇ ²⁸/₈₄+¹⁸/₂₁ ²⁸/₈₄+⁹⁰/₇ ²⁸/₈₄+¹⁸/₃₅ ²⁸/₈₄+¹⁸/₄₉

Add Fractions Calculator