Add 80/56 and 28/20
1st number: 1 24/56, 2nd number: 1 8/20
80/56 + 28/20 is 99/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
80/56 = 80 × 5/56 × 5 = 400/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
28/20 = 28 × 14/20 × 14 = 392/280 - Add the two like fractions:
400/280 + 392/280 = 400 + 392/280 = 792/280 - 792/280 simplified gives 99/35
- So, 80/56 + 28/20 = 99/35
In mixed form: 229/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+56/20 80/56+28/40 80/56+84/20 80/56+28/60