Add 56/72 and 5/80
56/72 + 5/80 is 121/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
56/72 = 56 × 10/72 × 10 = 560/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Add the two like fractions:
560/720 + 45/720 = 560 + 45/720 = 605/720 - 605/720 simplified gives 121/144
- So, 56/72 + 5/80 = 121/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72+10/80 56/72+15/80 56/72+25/80 56/72+35/80