Add 30/20 and 84/90
1st number: 1 10/20, 2nd number: 84/90
30/20 + 84/90 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
84/90 = 84 × 2/90 × 2 = 168/180 - Add the two like fractions:
270/180 + 168/180 = 270 + 168/180 = 438/180 - 438/180 simplified gives 73/30
- So, 30/20 + 84/90 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+84/90 30/40+84/90 90/20+84/90 30/60+84/90