Add 3/36 and 60/21, Solve 3/36 + 2 18/21 as a fraction

Add 3/36 and 60/21

1^st number: 3/36, 2^nd number: 2 18/21

3/36 + 60/21 is 247/84.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
60/21 = 60 × 12/21 × 12 = 720/252
Add the two like fractions:
21/252 + 720/252 = 21 + 720/252 = 741/252
741/252 simplified gives 247/84
So, 3/36 + 60/21 = 247/84
In mixed form: 279/84

MathStep (Works offline)

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