Add 56/80 and 15/18
56/80 + 15/18 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 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 18 × 40 = 720,
15/18 = 15 × 40/18 × 40 = 600/720 - Add the two like fractions:
504/720 + 600/720 = 504 + 600/720 = 1104/720 - 1104/720 simplified gives 23/15
- So, 56/80 + 15/18 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+30/18 56/80+15/36 56/80+45/18 56/80+15/54 56/80+75/18 56/80+15/90