Add 84/18 and 3/20
1st number: 4 12/18, 2nd number: 3/20
84/18 + 3/20 is 289/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
84/18 = 84 × 10/18 × 10 = 840/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Add the two like fractions:
840/180 + 27/180 = 840 + 27/180 = 867/180 - 867/180 simplified gives 289/60
- So, 84/18 + 3/20 = 289/60
In mixed form: 449/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+6/20 84/36+3/20 84/18+3/40 84/18+9/20 84/54+3/20 84/18+3/60 84/18+15/20 84/90+3/20 84/18+21/20