Add 21/56 and 80/60
1st number: 21/56, 2nd number: 1 20/60
21/56 + 80/60 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 60 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Likewise, for the 2nd fraction, since 60 × 14 = 840,
80/60 = 80 × 14/60 × 14 = 1120/840 - Add the two like fractions:
315/840 + 1120/840 = 315 + 1120/840 = 1435/840 - 1435/840 simplified gives 41/24
- So, 21/56 + 80/60 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+80/60 63/56+80/60