Add 80/56 and 6/21
1st number: 1 24/56, 2nd number: 6/21
80/56 + 6/21 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
80/56 = 80 × 3/56 × 3 = 240/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
6/21 = 6 × 8/21 × 8 = 48/168 - Add the two like fractions:
240/168 + 48/168 = 240 + 48/168 = 288/168 - 288/168 simplified gives 12/7
- So, 80/56 + 6/21 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+12/21 80/56+6/42 80/56+18/21 80/56+6/63 80/56+30/21 80/56+42/21