Answers

Add 81/20 and 35/75

1^st number: 4 1/20, 2^nd number: 35/75

81/20 + 35/75 is 271/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 75 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 20 × 15 = 300,
   81/20 = 81 × 15/20 × 15 = 1215/300
3. Likewise, for the 2nd fraction, since 75 × 4 = 300,
   35/75 = 35 × 4/75 × 4 = 140/300
4. Add the two like fractions:
   1215/300 + 140/300 = 1215 + 140/300 = 1355/300
5. 1355/300 simplified gives 271/60
6. So, 81/20 + 35/75 = 271/60
   In mixed form: 431/60

MathStep (Works offline)

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

Related: ⁸¹/₂₀+⁷⁰/₇₅ ⁸¹/₄₀+³⁵/₇₅ ⁸¹/₆₀+³⁵/₇₅

Add Fractions Calculator