Add 3/20 and 35/28
1st number: 3/20, 2nd number: 1 7/28
3/20 + 35/28 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
3/20 = 3 × 7/20 × 7 = 21/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
35/28 = 35 × 5/28 × 5 = 175/140 - Add the two like fractions:
21/140 + 175/140 = 21 + 175/140 = 196/140 - 196/140 simplified gives 7/5
- So, 3/20 + 35/28 = 7/5
In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+35/28 3/20+70/28 3/40+35/28 3/20+35/56 9/20+35/28 3/60+35/28 3/20+35/84 15/20+35/28 21/20+35/28