Add 21/54 and 18/24
21/54 + 18/24 is 41/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
18/24 = 18 × 9/24 × 9 = 162/216 - Add the two like fractions:
84/216 + 162/216 = 84 + 162/216 = 246/216 - 246/216 simplified gives 41/36
- So, 21/54 + 18/24 = 41/36
In mixed form: 15/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54+18/24 21/54+36/24 21/54+18/48 63/54+18/24 21/54+54/24 21/54+18/72 21/54+90/24