Add 8/81 and 45/90
8/81 + 45/90 is 97/162.
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,
8/81 = 8 × 10/81 × 10 = 80/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
45/90 = 45 × 9/90 × 9 = 405/810 - Add the two like fractions:
80/810 + 405/810 = 80 + 405/810 = 485/810 - 485/810 simplified gives 97/162
- So, 8/81 + 45/90 = 97/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/81+45/90 24/81+45/90 40/81+45/90 56/81+45/90