Add 21/4 and 54/24
1st number: 5 1/4, 2nd number: 2 6/24
21/4 + 54/24 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 4 × 6 = 24,
21/4 = 21 × 6/4 × 6 = 126/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
54/24 = 54 × 1/24 × 1 = 54/24 - Add the two like fractions:
126/24 + 54/24 = 126 + 54/24 = 180/24 - 180/24 simplified gives 15/2
- So, 21/4 + 54/24 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+54/24 21/8+54/24 21/4+54/48 63/4+54/24 21/12+54/24 21/4+54/72 21/20+54/24 21/28+54/24