Add 5/84 and 40/20
1st number: 5/84, 2nd number: 2 0/20
5/84 + 40/20 is 173/84.
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,
40/20 = 40 × 21/20 × 21 = 840/420 - Add the two like fractions:
25/420 + 840/420 = 25 + 840/420 = 865/420 - 865/420 simplified gives 173/84
- So, 5/84 + 40/20 = 173/84
In mixed form: 25/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84+40/20 5/84+80/20 15/84+40/20 5/84+40/60 25/84+40/20 35/84+40/20