Add 40/27 and 21/30
1st number: 1 13/27, 2nd number: 21/30
40/27 + 21/30 is 589/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
40/27 = 40 × 10/27 × 10 = 400/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Add the two like fractions:
400/270 + 189/270 = 400 + 189/270 = 589/270 - So, 40/27 + 21/30 = 589/270
In mixed form: 249/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/27+21/30 40/27+42/30 40/54+21/30 40/27+21/60 40/27+63/30 40/81+21/30 40/27+21/90