Add 60/12 and 7/21, Solve 5 0/12 + 7/21 as a fraction

Add 60/12 and 7/21

1^st number: 5 0/12, 2^nd number: 7/21

60/12 + 7/21 is 16/3.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
60/12 = 60 × 7/12 × 7 = 420/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84
Add the two like fractions:
420/84 + 28/84 = 420 + 28/84 = 448/84
448/84 simplified gives 16/3
So, 60/12 + 7/21 = 16/3
In mixed form: 51/3

MathStep (Works offline)

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