Add 6/36 and 25/21, Solve 6/36 + 1 4/21 as a fraction

Add 6/36 and 25/21

1^st number: 6/36, 2^nd number: 1 4/21

6/36 + 25/21 is 19/14.

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,
6/36 = 6 × 7/36 × 7 = 42/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
25/21 = 25 × 12/21 × 12 = 300/252
Add the two like fractions:
42/252 + 300/252 = 42 + 300/252 = 342/252
342/252 simplified gives 19/14
So, 6/36 + 25/21 = 19/14
In mixed form: 15/14

MathStep (Works offline)

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