Add 28/20 and 28/35
1st number: 1 8/20, 2nd number: 28/35
28/20 + 28/35 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 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 35 × 4 = 140,
28/35 = 28 × 4/35 × 4 = 112/140 - Add the two like fractions:
196/140 + 112/140 = 196 + 112/140 = 308/140 - 308/140 simplified gives 11/5
- So, 28/20 + 28/35 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+28/35 28/20+56/35 28/40+28/35 28/20+28/70 84/20+28/35 28/20+84/35 28/60+28/35