Add 45/9 and 28/20
1st number: 5 0/9, 2nd number: 1 8/20
45/9 + 28/20 is 32/5.
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,
28/20 = 28 × 9/20 × 9 = 252/180 - Add the two like fractions:
900/180 + 252/180 = 900 + 252/180 = 1152/180 - 1152/180 simplified gives 32/5
- So, 45/9 + 28/20 = 32/5
In mixed form: 62/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9+28/20 45/9+56/20 45/18+28/20 45/9+28/40 45/9+84/20 45/27+28/20 45/9+28/60 45/63+28/20