Add 72/12 and 70/49, Solve 6 0/12 + 1 21/49 as a fraction

Add 72/12 and 70/49

1^st number: 6 0/12, 2^nd number: 1 21/49

72/12 + 70/49 is 52/7.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 49 is 588

Next, find the equivalent fraction of both fractional numbers with denominator 588
For the 1st fraction, since 12 × 49 = 588,
72/12 = 72 × 49/12 × 49 = 3528/588
Likewise, for the 2nd fraction, since 49 × 12 = 588,
70/49 = 70 × 12/49 × 12 = 840/588
Add the two like fractions:
3528/588 + 840/588 = 3528 + 840/588 = 4368/588
4368/588 simplified gives 52/7
So, 72/12 + 70/49 = 52/7
In mixed form: 73/7

MathStep (Works offline)

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