Add 60/20 and 21/84
1st number: 3 0/20, 2nd number: 21/84
60/20 + 21/84 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Add the two like fractions:
1260/420 + 105/420 = 1260 + 105/420 = 1365/420 - 1365/420 simplified gives 13/4
- So, 60/20 + 21/84 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+42/84 60/40+21/84 60/20+63/84