Add 30/21 and 63/24
1st number: 1 9/21, 2nd number: 2 15/24
30/21 + 63/24 is 227/56.
Steps for adding fractions
- 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,
30/21 = 30 × 8/21 × 8 = 240/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
63/24 = 63 × 7/24 × 7 = 441/168 - Add the two like fractions:
240/168 + 441/168 = 240 + 441/168 = 681/168 - 681/168 simplified gives 227/56
- So, 30/21 + 63/24 = 227/56
In mixed form: 43/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+63/24 30/42+63/24 30/21+63/48 90/21+63/24 30/63+63/24 30/21+63/72