Add 27/21 and 3/24, Solve 1 6/21 + 3/24 as a fraction

Add 27/21 and 3/24

1^st number: 1 6/21, 2^nd number: 3/24

27/21 + 3/24 is 79/56.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
3/24 = 3 × 7/24 × 7 = 21/168
Add the two like fractions:
216/168 + 21/168 = 216 + 21/168 = 237/168
237/168 simplified gives 79/56
So, 27/21 + 3/24 = 79/56
In mixed form: 123/56

MathStep (Works offline)

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