Add 21/56 and 5/12
21/56 + 5/12 is 19/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 12 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
5/12 = 5 × 14/12 × 14 = 70/168 - Add the two like fractions:
63/168 + 70/168 = 63 + 70/168 = 133/168 - 133/168 simplified gives 19/24
- So, 21/56 + 5/12 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+5/12 21/56+10/12 21/56+5/24 63/56+5/12 21/56+15/12 21/56+5/36 21/56+25/12 21/56+5/60 21/56+35/12 21/56+5/84