Add 49/28 and 30/20
1st number: 1 21/28, 2nd number: 1 10/20
49/28 + 30/20 is 13/4.
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,
49/28 = 49 × 5/28 × 5 = 245/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
245/140 + 210/140 = 245 + 210/140 = 455/140 - 455/140 simplified gives 13/4
- So, 49/28 + 30/20 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/28+30/20 49/28+60/20 49/56+30/20 49/28+30/40 49/28+90/20 49/84+30/20 49/28+30/60