Add 27/2 and 18/21
1st number: 13 1/2, 2nd number: 18/21
27/2 + 18/21 is 201/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
27/2 = 27 × 21/2 × 21 = 567/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Add the two like fractions:
567/42 + 36/42 = 567 + 36/42 = 603/42 - 603/42 simplified gives 201/14
- So, 27/2 + 18/21 = 201/14
In mixed form: 145/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/2+18/21 27/2+36/21 27/4+18/21 27/2+18/42 81/2+18/21 27/2+54/21 27/6+18/21 27/2+18/63 27/2+90/21 27/10+18/21 27/14+18/21