Add 18/9 and 63/90
1st number: 2 0/9, 2nd number: 63/90
18/9 + 63/90 is 27/10.
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,
18/9 = 18 × 10/9 × 10 = 180/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
63/90 = 63 × 1/90 × 1 = 63/90 - Add the two like fractions:
180/90 + 63/90 = 180 + 63/90 = 243/90 - 243/90 simplified gives 27/10
- So, 18/9 + 63/90 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+63/90 54/9+63/90 18/27+63/90 90/9+63/90 18/45+63/90 18/63+63/90