Add 3/28 and 3/20
3/28 + 3/20 is 9/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
3/28 = 3 × 5/28 × 5 = 15/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
3/20 = 3 × 7/20 × 7 = 21/140 - Add the two like fractions:
15/140 + 21/140 = 15 + 21/140 = 36/140 - 36/140 simplified gives 9/35
- So, 3/28 + 3/20 = 9/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28+3/20 3/28+6/20 3/56+3/20 3/28+3/40 9/28+3/20 3/28+9/20 3/84+3/20 3/28+3/60 15/28+3/20 3/28+15/20 21/28+3/20 3/28+21/20