Add 8/21 and 60/20
1st number: 8/21, 2nd number: 3 0/20
8/21 + 60/20 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
8/21 = 8 × 20/21 × 20 = 160/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420 - Add the two like fractions:
160/420 + 1260/420 = 160 + 1260/420 = 1420/420 - 1420/420 simplified gives 71/21
- So, 8/21 + 60/20 = 71/21
In mixed form: 38/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+60/20 8/42+60/20 8/21+60/40 24/21+60/20 8/63+60/20 40/21+60/20 56/21+60/20