Add 3/5 and 21/27
3/5 + 21/27 is 62/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 5 × 27 = 135,
3/5 = 3 × 27/5 × 27 = 81/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Add the two like fractions:
81/135 + 105/135 = 81 + 105/135 = 186/135 - 186/135 simplified gives 62/45
- So, 3/5 + 21/27 = 62/45
In mixed form: 117/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+21/27 3/5+42/27 3/10+21/27 3/5+21/54 9/5+21/27 3/5+63/27 3/15+21/27 3/5+21/81 15/5+21/27 3/25+21/27 21/5+21/27 3/35+21/27