Add 5/56 and 12/21
5/56 + 12/21 is 37/56.
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,
5/56 = 5 × 3/56 × 3 = 15/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
12/21 = 12 × 8/21 × 8 = 96/168 - Add the two like fractions:
15/168 + 96/168 = 15 + 96/168 = 111/168 - 111/168 simplified gives 37/56
- So, 5/56 + 12/21 = 37/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/56+12/21 5/56+24/21 5/56+12/42 15/56+12/21 5/56+36/21 5/56+12/63 25/56+12/21 5/56+60/21 35/56+12/21 5/56+84/21