Add 54/81 and 30/90
54/81 + 30/90 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
54/81 = 54 × 10/81 × 10 = 540/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
30/90 = 30 × 9/90 × 9 = 270/810 - Add the two like fractions:
540/810 + 270/810 = 540 + 270/810 = 810/810 - 810/810 simplified gives 1/1
- So, 54/81 + 30/90 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/81+60/90