Add 40/16 and 3/21
1st number: 2 8/16, 2nd number: 3/21
40/16 + 3/21 is 37/14.
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,
40/16 = 40 × 21/16 × 21 = 840/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
3/21 = 3 × 16/21 × 16 = 48/336 - Add the two like fractions:
840/336 + 48/336 = 840 + 48/336 = 888/336 - 888/336 simplified gives 37/14
- So, 40/16 + 3/21 = 37/14
In mixed form: 29/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/16+3/21 40/16+6/21 40/32+3/21 40/16+3/42 40/16+9/21 40/48+3/21 40/16+3/63 40/16+15/21 40/80+3/21