Add 45/28 and 21/14
1st number: 1 17/28, 2nd number: 1 7/14
45/28 + 21/14 is 87/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 14 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
45/28 = 45 × 1/28 × 1 = 45/28 - Likewise, for the 2nd fraction, since 14 × 2 = 28,
21/14 = 21 × 2/14 × 2 = 42/28 - Add the two like fractions:
45/28 + 42/28 = 45 + 42/28 = 87/28 - So, 45/28 + 21/14 = 87/28
In mixed form: 33/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+21/14 45/28+42/14 45/56+21/14 45/28+21/28 45/28+63/14 45/84+21/14 45/28+21/42 45/28+21/70 45/28+21/98