Add 1/21 and 48/18
1st number: 1/21, 2nd number: 2 12/18
1/21 + 48/18 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
1/21 = 1 × 6/21 × 6 = 6/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
48/18 = 48 × 7/18 × 7 = 336/126 - Add the two like fractions:
6/126 + 336/126 = 6 + 336/126 = 342/126 - 342/126 simplified gives 19/7
- So, 1/21 + 48/18 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+48/18 1/21+96/18 1/42+48/18 1/21+48/36 3/21+48/18 1/63+48/18 1/21+48/54 5/21+48/18 1/21+48/90 7/21+48/18