Add 3/72 and 56/80
3/72 + 56/80 is 89/120.
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,
3/72 = 3 × 10/72 × 10 = 30/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
56/80 = 56 × 9/80 × 9 = 504/720 - Add the two like fractions:
30/720 + 504/720 = 30 + 504/720 = 534/720 - 534/720 simplified gives 89/120
- So, 3/72 + 56/80 = 89/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/72+56/80 9/72+56/80 15/72+56/80 21/72+56/80