Answers

Add 81/24 and 81/42

1^st number: 3 9/24, 2^nd number: 1 39/42

81/24 + 81/42 is 297/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 42 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 24 × 7 = 168,
   81/24 = 81 × 7/24 × 7 = 567/168
3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
   81/42 = 81 × 4/42 × 4 = 324/168
4. Add the two like fractions:
   567/168 + 324/168 = 567 + 324/168 = 891/168
5. 891/168 simplified gives 297/56
6. So, 81/24 + 81/42 = 297/56
   In mixed form: 517/56

MathStep (Works offline)

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

Related: ⁸¹/₄₈+⁸¹/₄₂ ⁸¹/₂₄+⁸¹/₈₄ ⁸¹/₇₂+⁸¹/₄₂

Add Fractions Calculator