Add 1/84 and 25/20
1st number: 1/84, 2nd number: 1 5/20
1/84 + 25/20 is 53/42.
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,
1/84 = 1 × 5/84 × 5 = 5/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
25/20 = 25 × 21/20 × 21 = 525/420 - Add the two like fractions:
5/420 + 525/420 = 5 + 525/420 = 530/420 - 530/420 simplified gives 53/42
- So, 1/84 + 25/20 = 53/42
In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84+25/20 1/84+50/20 1/84+25/40 3/84+25/20 1/84+75/20 1/84+25/60 5/84+25/20 7/84+25/20