Add 56/80 and 21/36
56/80 + 21/36 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
56/80 = 56 × 9/80 × 9 = 504/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
21/36 = 21 × 20/36 × 20 = 420/720 - Add the two like fractions:
504/720 + 420/720 = 504 + 420/720 = 924/720 - 924/720 simplified gives 77/60
- So, 56/80 + 21/36 = 77/60
In mixed form: 117/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+42/36 56/80+21/72 56/80+63/36