Add 21/54 and 7/3
1st number: 21/54, 2nd number: 2 1/3
21/54 + 7/3 is 49/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 3 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Likewise, for the 2nd fraction, since 3 × 18 = 54,
7/3 = 7 × 18/3 × 18 = 126/54 - Add the two like fractions:
21/54 + 126/54 = 21 + 126/54 = 147/54 - 147/54 simplified gives 49/18
- So, 21/54 + 7/3 = 49/18
In mixed form: 213/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54+7/3 21/54+14/3 21/54+7/6 63/54+7/3 21/54+21/3 21/54+7/9 21/54+35/3 21/54+7/15 21/54+49/3 21/54+7/21