Add 84/72 and 56/9, Solve 1 12/72 + 6 2/9 as a fraction

Add 84/72 and 56/9

1^st number: 1 12/72, 2^nd number: 6 2/9

84/72 + 56/9 is 133/18.

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,
84/72 = 84 × 1/72 × 1 = 84/72
Likewise, for the 2nd fraction, since 9 × 8 = 72,
56/9 = 56 × 8/9 × 8 = 448/72
Add the two like fractions:
84/72 + 448/72 = 84 + 448/72 = 532/72
532/72 simplified gives 133/18
So, 84/72 + 56/9 = 133/18
In mixed form: 77/18

MathStep (Works offline)

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