Add 15/16 and 10/21
15/16 + 10/21 is 475/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
15/16 = 15 × 21/16 × 21 = 315/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336 - Add the two like fractions:
315/336 + 160/336 = 315 + 160/336 = 475/336 - So, 15/16 + 10/21 = 475/336
In mixed form: 1139/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/16+10/21 15/16+20/21 15/32+10/21 15/16+10/42 45/16+10/21 15/16+30/21 15/48+10/21 15/16+10/63 75/16+10/21 15/16+50/21 15/80+10/21 15/16+70/21