Add 16/28 and 1/21
16/28 + 1/21 is 13/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
16/28 = 16 × 3/28 × 3 = 48/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
1/21 = 1 × 4/21 × 4 = 4/84 - Add the two like fractions:
48/84 + 4/84 = 48 + 4/84 = 52/84 - 52/84 simplified gives 13/21
- So, 16/28 + 1/21 = 13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/28+1/21 16/28+2/21 16/56+1/21 16/28+1/42 48/28+1/21 16/28+3/21 16/84+1/21 16/28+1/63 80/28+1/21 16/28+5/21 16/28+7/21