Add 5/84 and 42/20
1st number: 5/84, 2nd number: 2 2/20
5/84 + 42/20 is 907/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
42/20 = 42 × 21/20 × 21 = 882/420 - Add the two like fractions:
25/420 + 882/420 = 25 + 882/420 = 907/420 - So, 5/84 + 42/20 = 907/420
In mixed form: 267/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84+42/20 5/84+84/20 5/84+42/40 15/84+42/20 5/84+42/60 25/84+42/20 35/84+42/20