Add 84/9 and 5/20
1st number: 9 3/9, 2nd number: 5/20
84/9 + 5/20 is 115/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
84/9 = 84 × 20/9 × 20 = 1680/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
5/20 = 5 × 9/20 × 9 = 45/180 - Add the two like fractions:
1680/180 + 45/180 = 1680 + 45/180 = 1725/180 - 1725/180 simplified gives 115/12
- So, 84/9 + 5/20 = 115/12
In mixed form: 97/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+10/20 84/18+5/20 84/9+5/40 84/9+15/20 84/27+5/20 84/9+5/60 84/9+25/20 84/45+5/20 84/9+35/20 84/63+5/20