Add 28/20 and 20/7
1st number: 1 8/20, 2nd number: 2 6/7
28/20 + 20/7 is 149/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
28/20 = 28 × 7/20 × 7 = 196/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
20/7 = 20 × 20/7 × 20 = 400/140 - Add the two like fractions:
196/140 + 400/140 = 196 + 400/140 = 596/140 - 596/140 simplified gives 149/35
- So, 28/20 + 20/7 = 149/35
In mixed form: 49/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+20/7 28/20+40/7 28/40+20/7 28/20+20/14 84/20+20/7 28/20+60/7 28/60+20/7 28/20+20/21 28/20+20/35 28/20+20/49