Add 21/60 and 80/27
1st number: 21/60, 2nd number: 2 26/27
21/60 + 80/27 is 1789/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
21/60 = 21 × 9/60 × 9 = 189/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
80/27 = 80 × 20/27 × 20 = 1600/540 - Add the two like fractions:
189/540 + 1600/540 = 189 + 1600/540 = 1789/540 - So, 21/60 + 80/27 = 1789/540
In mixed form: 3169/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+80/27 21/60+80/54 63/60+80/27 21/60+80/81