Add 90/9 and 9/20
1st number: 10 0/9, 2nd number: 9/20
90/9 + 9/20 is 209/20.
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,
90/9 = 90 × 20/9 × 20 = 1800/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
1800/180 + 81/180 = 1800 + 81/180 = 1881/180 - 1881/180 simplified gives 209/20
- So, 90/9 + 9/20 = 209/20
In mixed form: 109/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9+18/20 90/18+9/20 90/9+9/40 90/9+27/20 90/27+9/20 90/9+9/60 90/9+45/20 90/45+9/20 90/9+63/20 90/63+9/20