Add 21/14 and 45/56
1st number: 1 7/14, 2nd number: 45/56
21/14 + 45/56 is 129/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
45/56 = 45 × 1/56 × 1 = 45/56 - Add the two like fractions:
84/56 + 45/56 = 84 + 45/56 = 129/56 - So, 21/14 + 45/56 = 129/56
In mixed form: 217/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+45/56 21/14+90/56 21/28+45/56 63/14+45/56 21/42+45/56 21/70+45/56 21/98+45/56