Add 15/20 and 56/9
1st number: 15/20, 2nd number: 6 2/9
15/20 + 56/9 is 251/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
15/20 = 15 × 9/20 × 9 = 135/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
56/9 = 56 × 20/9 × 20 = 1120/180 - Add the two like fractions:
135/180 + 1120/180 = 135 + 1120/180 = 1255/180 - 1255/180 simplified gives 251/36
- So, 15/20 + 56/9 = 251/36
In mixed form: 635/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20+56/9 15/40+56/9 15/20+56/18 45/20+56/9 15/60+56/9 15/20+56/27 75/20+56/9 15/20+56/45 15/20+56/63