Answers

Add 27/30 and 81/60

1^st number: 27/30, 2^nd number: 1 21/60

27/30 + 81/60 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 60 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 30 × 2 = 60,
   27/30 = 27 × 2/30 × 2 = 54/60
3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
   81/60 = 81 × 1/60 × 1 = 81/60
4. Add the two like fractions:
   54/60 + 81/60 = 54 + 81/60 = 135/60
5. 135/60 simplified gives 9/4
6. So, 27/30 + 81/60 = 9/4
   In mixed form: 21/4

MathStep (Works offline)

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

Related: ⁵⁴/₃₀+⁸¹/₆₀ ²⁷/₆₀+⁸¹/₆₀ ⁸¹/₃₀+⁸¹/₆₀ ²⁷/₉₀+⁸¹/₆₀

Add Fractions Calculator