Answers

Add 81/40 and 25/56

1^st number: 2 1/40, 2^nd number: 25/56

81/40 + 25/56 is 173/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   81/40 = 81 × 7/40 × 7 = 567/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   25/56 = 25 × 5/56 × 5 = 125/280
4. Add the two like fractions:
   567/280 + 125/280 = 567 + 125/280 = 692/280
5. 692/280 simplified gives 173/70
6. So, 81/40 + 25/56 = 173/70
   In mixed form: 233/70

MathStep (Works offline)

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

Related: ⁸¹/₄₀+⁵⁰/₅₆ ⁸¹/₈₀+²⁵/₅₆ ⁸¹/₄₀+⁷⁵/₅₆

Add Fractions Calculator