Add 40/21 and 27/60
1st number: 1 19/21, 2nd number: 27/60
40/21 + 27/60 is 989/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
40/21 = 40 × 20/21 × 20 = 800/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
27/60 = 27 × 7/60 × 7 = 189/420 - Add the two like fractions:
800/420 + 189/420 = 800 + 189/420 = 989/420 - So, 40/21 + 27/60 = 989/420
In mixed form: 2149/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+27/60 40/21+54/60 40/42+27/60 40/21+81/60 40/63+27/60