Add 56/72 and 84/9, Solve 56/72 + 9 3/9 as a fraction

Add 56/72 and 84/9

1^st number: 56/72, 2^nd number: 9 3/9

56/72 + 84/9 is 91/9.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
56/72 = 56 × 1/72 × 1 = 56/72
Likewise, for the 2nd fraction, since 9 × 8 = 72,
84/9 = 84 × 8/9 × 8 = 672/72
Add the two like fractions:
56/72 + 672/72 = 56 + 672/72 = 728/72
728/72 simplified gives 91/9
So, 56/72 + 84/9 = 91/9
In mixed form: 101/9

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad