Answers

Add 81/60 and 18/35

1^st number: 1 21/60, 2^nd number: 18/35

81/60 + 18/35 is 261/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 35 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   81/60 = 81 × 7/60 × 7 = 567/420
3. Likewise, for the 2nd fraction, since 35 × 12 = 420,
   18/35 = 18 × 12/35 × 12 = 216/420
4. Add the two like fractions:
   567/420 + 216/420 = 567 + 216/420 = 783/420
5. 783/420 simplified gives 261/140
6. So, 81/60 + 18/35 = 261/140
   In mixed form: 1121/140

MathStep (Works offline)

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

Related: ⁸¹/₆₀+³⁶/₃₅ ⁸¹/₆₀+¹⁸/₇₀ ⁸¹/₆₀+⁵⁴/₃₅ ⁸¹/₆₀+⁹⁰/₃₅

Add Fractions Calculator