Add 10/9 and 20/90
1st number: 1 1/9, 2nd number: 20/90
10/9 + 20/90 is 4/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
10/9 = 10 × 10/9 × 10 = 100/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Add the two like fractions:
100/90 + 20/90 = 100 + 20/90 = 120/90 - 120/90 simplified gives 4/3
- So, 10/9 + 20/90 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/9+20/90 10/9+40/90 10/18+20/90 30/9+20/90 10/9+60/90 10/27+20/90 50/9+20/90 10/45+20/90 70/9+20/90 10/63+20/90