Add 4/16 and 1/21
4/16 + 1/21 is 25/84.
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,
4/16 = 4 × 21/16 × 21 = 84/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Add the two like fractions:
84/336 + 16/336 = 84 + 16/336 = 100/336 - 100/336 simplified gives 25/84
- So, 4/16 + 1/21 = 25/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/16+1/21 4/16+2/21 4/32+1/21 4/16+1/42 12/16+1/21 4/16+3/21 4/48+1/21 4/16+1/63 20/16+1/21 4/16+5/21 4/80+1/21 28/16+1/21 4/16+7/21