Add 36/21 and 45/24, Solve 1 15/21 + 1 21/24 as a fraction

Add 36/21 and 45/24

1^st number: 1 15/21, 2^nd number: 1 21/24

36/21 + 45/24 is 201/56.

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,
36/21 = 36 × 8/21 × 8 = 288/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
45/24 = 45 × 7/24 × 7 = 315/168
Add the two like fractions:
288/168 + 315/168 = 288 + 315/168 = 603/168
603/168 simplified gives 201/56
So, 36/21 + 45/24 = 201/56
In mixed form: 333/56

MathStep (Works offline)

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