Add 54/24 and 9/21
1st number: 2 6/24, 2nd number: 9/21
54/24 + 9/21 is 75/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
54/24 = 54 × 7/24 × 7 = 378/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168 - Add the two like fractions:
378/168 + 72/168 = 378 + 72/168 = 450/168 - 450/168 simplified gives 75/28
- So, 54/24 + 9/21 = 75/28
In mixed form: 219/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/24+18/21 54/48+9/21 54/24+9/42 54/24+27/21 54/72+9/21 54/24+9/63 54/24+45/21 54/24+63/21