Add 2/15 and 10/21
2/15 + 10/21 is 64/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
2/15 = 2 × 7/15 × 7 = 14/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
10/21 = 10 × 5/21 × 5 = 50/105 - Add the two like fractions:
14/105 + 50/105 = 14 + 50/105 = 64/105 - So, 2/15 + 10/21 = 64/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15+10/21 2/15+20/21 2/30+10/21 2/15+10/42 6/15+10/21 2/15+30/21 2/45+10/21 2/15+10/63 10/15+10/21 2/15+50/21 2/75+10/21 14/15+10/21 2/15+70/21