Add 3/56 and 3/21
3/56 + 3/21 is 11/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
3/56 = 3 × 3/56 × 3 = 9/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
3/21 = 3 × 8/21 × 8 = 24/168 - Add the two like fractions:
9/168 + 24/168 = 9 + 24/168 = 33/168 - 33/168 simplified gives 11/56
- So, 3/56 + 3/21 = 11/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/56+3/21 3/56+6/21 3/56+3/42 9/56+3/21 3/56+9/21 3/56+3/63 15/56+3/21 3/56+15/21 21/56+3/21