Add 35/20 and 21/27
1st number: 1 15/20, 2nd number: 21/27
35/20 + 21/27 is 91/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
35/20 = 35 × 27/20 × 27 = 945/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
21/27 = 21 × 20/27 × 20 = 420/540 - Add the two like fractions:
945/540 + 420/540 = 945 + 420/540 = 1365/540 - 1365/540 simplified gives 91/36
- So, 35/20 + 21/27 = 91/36
In mixed form: 219/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+21/27 35/20+42/27 35/40+21/27 35/20+21/54 35/20+63/27 35/60+21/27 35/20+21/81