Add 30/20 and 3/90
1st number: 1 10/20, 2nd number: 3/90
30/20 + 3/90 is 23/15.
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,
3/90 = 3 × 2/90 × 2 = 6/180 - Add the two like fractions:
270/180 + 6/180 = 270 + 6/180 = 276/180 - 276/180 simplified gives 23/15
- So, 30/20 + 3/90 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+3/90 30/20+6/90 30/40+3/90 90/20+3/90 30/20+9/90 30/60+3/90 30/20+15/90 30/20+21/90