Add 9/21 and 5/56
9/21 + 5/56 is 29/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
5/56 = 5 × 3/56 × 3 = 15/168 - Add the two like fractions:
72/168 + 15/168 = 72 + 15/168 = 87/168 - 87/168 simplified gives 29/56
- So, 9/21 + 5/56 = 29/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+5/56 9/21+10/56 9/42+5/56 27/21+5/56 9/21+15/56 9/63+5/56 45/21+5/56 9/21+25/56 63/21+5/56 9/21+35/56