Add 63/16 and 10/21
1st number: 3 15/16, 2nd number: 10/21
63/16 + 10/21 is 1483/336.
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,
63/16 = 63 × 21/16 × 21 = 1323/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336 - Add the two like fractions:
1323/336 + 160/336 = 1323 + 160/336 = 1483/336 - So, 63/16 + 10/21 = 1483/336
In mixed form: 4139/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/16+20/21 63/32+10/21 63/16+10/42 63/16+30/21 63/48+10/21 63/16+10/63 63/16+50/21 63/80+10/21 63/16+70/21