Add 20/9 and 18/45
1st number: 2 2/9, 2nd number: 18/45
20/9 + 18/45 is 118/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
20/9 = 20 × 5/9 × 5 = 100/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
18/45 = 18 × 1/45 × 1 = 18/45 - Add the two like fractions:
100/45 + 18/45 = 100 + 18/45 = 118/45 - So, 20/9 + 18/45 = 118/45
In mixed form: 228/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9+18/45 20/9+36/45 20/18+18/45 20/9+18/90 60/9+18/45 20/9+54/45 20/27+18/45 20/9+90/45 20/45+18/45 20/63+18/45