Add 80/49 and 28/20
1st number: 1 31/49, 2nd number: 1 8/20
80/49 + 28/20 is 743/245.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
80/49 = 80 × 20/49 × 20 = 1600/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
28/20 = 28 × 49/20 × 49 = 1372/980 - Add the two like fractions:
1600/980 + 1372/980 = 1600 + 1372/980 = 2972/980 - 2972/980 simplified gives 743/245
- So, 80/49 + 28/20 = 743/245
In mixed form: 38/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/49+56/20 80/98+28/20 80/49+28/40 80/49+84/20 80/49+28/60