Answers

Add 81/40 and 5/75

1^st number: 2 1/40, 2^nd number: 5/75

81/40 + 5/75 is 251/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 75 is 600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 600
2. For the 1st fraction, since 40 × 15 = 600,
   81/40 = 81 × 15/40 × 15 = 1215/600
3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
   5/75 = 5 × 8/75 × 8 = 40/600
4. Add the two like fractions:
   1215/600 + 40/600 = 1215 + 40/600 = 1255/600
5. 1255/600 simplified gives 251/120
6. So, 81/40 + 5/75 = 251/120
   In mixed form: 211/120

MathStep (Works offline)

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

Related: ⁸¹/₄₀+¹⁰/₇₅ ⁸¹/₈₀+⁵/₇₅ ⁸¹/₄₀+¹⁵/₇₅ ⁸¹/₄₀+²⁵/₇₅ ⁸¹/₄₀+³⁵/₇₅

Add Fractions Calculator