Answers

Add 81/4 and 56/15

1^st number: 20 1/4, 2^nd number: 3 11/15

81/4 + 56/15 is 1439/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 15 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 4 × 15 = 60,
   81/4 = 81 × 15/4 × 15 = 1215/60
3. Likewise, for the 2nd fraction, since 15 × 4 = 60,
   56/15 = 56 × 4/15 × 4 = 224/60
4. Add the two like fractions:
   1215/60 + 224/60 = 1215 + 224/60 = 1439/60
5. So, 81/4 + 56/15 = 1439/60
   In mixed form: 2359/60

MathStep (Works offline)

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

Related: ⁸¹/₈+⁵⁶/₁₅ ⁸¹/₄+⁵⁶/₃₀ ⁸¹/₁₂+⁵⁶/₁₅ ⁸¹/₄+⁵⁶/₄₅ ⁸¹/₂₀+⁵⁶/₁₅ ⁸¹/₄+⁵⁶/₇₅ ⁸¹/₂₈+⁵⁶/₁₅

Add Fractions Calculator