Add 12/9 and 56/72
1st number: 1 3/9, 2nd number: 56/72
12/9 + 56/72 is 19/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
12/9 = 12 × 8/9 × 8 = 96/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
56/72 = 56 × 1/72 × 1 = 56/72 - Add the two like fractions:
96/72 + 56/72 = 96 + 56/72 = 152/72 - 152/72 simplified gives 19/9
- So, 12/9 + 56/72 = 19/9
In mixed form: 21/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+56/72 12/18+56/72 36/9+56/72 12/27+56/72 60/9+56/72 12/45+56/72 84/9+56/72 12/63+56/72