Add 2/15 and 21/84
2/15 + 21/84 is 23/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
2/15 = 2 × 28/15 × 28 = 56/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Add the two like fractions:
56/420 + 105/420 = 56 + 105/420 = 161/420 - 161/420 simplified gives 23/60
- So, 2/15 + 21/84 = 23/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15+21/84 2/15+42/84 2/30+21/84 6/15+21/84 2/15+63/84 2/45+21/84 10/15+21/84 2/75+21/84 14/15+21/84