Add 45/9 and 30/20
1st number: 5 0/9, 2nd number: 1 10/20
45/9 + 30/20 is 13/2.
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,
45/9 = 45 × 20/9 × 20 = 900/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Add the two like fractions:
900/180 + 270/180 = 900 + 270/180 = 1170/180 - 1170/180 simplified gives 13/2
- So, 45/9 + 30/20 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9+30/20 45/9+60/20 45/18+30/20 45/9+30/40 45/9+90/20 45/27+30/20 45/9+30/60 45/63+30/20