Add 35/28 and 21/45
1st number: 1 7/28, 2nd number: 21/45
35/28 + 21/45 is 103/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
35/28 = 35 × 45/28 × 45 = 1575/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
21/45 = 21 × 28/45 × 28 = 588/1260 - Add the two like fractions:
1575/1260 + 588/1260 = 1575 + 588/1260 = 2163/1260 - 2163/1260 simplified gives 103/60
- So, 35/28 + 21/45 = 103/60
In mixed form: 143/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+21/45 35/28+42/45 35/56+21/45 35/28+21/90 35/28+63/45 35/84+21/45