Add 72/12 and 63/30, Solve 6 0/12 + 2 3/30 as a fraction

Add 72/12 and 63/30

1^st number: 6 0/12, 2^nd number: 2 3/30

72/12 + 63/30 is 81/10.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60
Likewise, for the 2nd fraction, since 30 × 2 = 60,
63/30 = 63 × 2/30 × 2 = 126/60
Add the two like fractions:
360/60 + 126/60 = 360 + 126/60 = 486/60
486/60 simplified gives 81/10
So, 72/12 + 63/30 = 81/10
In mixed form: 81/10

MathStep (Works offline)

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