Add 27/21 and 24/18
1st number: 1 6/21, 2nd number: 1 6/18
27/21 + 24/18 is 55/21.
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,
27/21 = 27 × 6/21 × 6 = 162/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
24/18 = 24 × 7/18 × 7 = 168/126 - Add the two like fractions:
162/126 + 168/126 = 162 + 168/126 = 330/126 - 330/126 simplified gives 55/21
- So, 27/21 + 24/18 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+24/18 27/21+48/18 27/42+24/18 27/21+24/36 81/21+24/18 27/21+72/18 27/63+24/18 27/21+24/54 27/21+24/90