Add 90/81 and 9/30
1st number: 1 9/81, 2nd number: 9/30
90/81 + 9/30 is 127/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
90/81 = 90 × 10/81 × 10 = 900/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
9/30 = 9 × 27/30 × 27 = 243/810 - Add the two like fractions:
900/810 + 243/810 = 900 + 243/810 = 1143/810 - 1143/810 simplified gives 127/90
- So, 90/81 + 9/30 = 127/90
In mixed form: 137/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/81+18/30 90/81+9/60 90/81+27/30 90/81+9/90 90/81+45/30 90/81+63/30