Add 35/28 and 30/20
1st number: 1 7/28, 2nd number: 1 10/20
35/28 + 30/20 is 11/4.
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,
35/28 = 35 × 5/28 × 5 = 175/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
175/140 + 210/140 = 175 + 210/140 = 385/140 - 385/140 simplified gives 11/4
- So, 35/28 + 30/20 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+30/20 35/28+60/20 35/56+30/20 35/28+30/40 35/28+90/20 35/84+30/20 35/28+30/60