Add 10/9 and 90/20
1st number: 1 1/9, 2nd number: 4 10/20
10/9 + 90/20 is 101/18.
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,
10/9 = 10 × 20/9 × 20 = 200/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Add the two like fractions:
200/180 + 810/180 = 200 + 810/180 = 1010/180 - 1010/180 simplified gives 101/18
- So, 10/9 + 90/20 = 101/18
In mixed form: 511/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/9+90/20 10/18+90/20 10/9+90/40 30/9+90/20 10/27+90/20 10/9+90/60 50/9+90/20 10/45+90/20 70/9+90/20 10/63+90/20