Add 3/21 and 45/24
1st number: 3/21, 2nd number: 1 21/24
3/21 + 45/24 is 113/56.
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,
3/21 = 3 × 8/21 × 8 = 24/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
45/24 = 45 × 7/24 × 7 = 315/168 - Add the two like fractions:
24/168 + 315/168 = 24 + 315/168 = 339/168 - 339/168 simplified gives 113/56
- So, 3/21 + 45/24 = 113/56
In mixed form: 21/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21+45/24 3/21+90/24 3/42+45/24 3/21+45/48 9/21+45/24 3/63+45/24 3/21+45/72 15/21+45/24