Add 1/90 and 50/81
1/90 + 50/81 is 509/810.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
1/90 = 1 × 9/90 × 9 = 9/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
50/81 = 50 × 10/81 × 10 = 500/810 - Add the two like fractions:
9/810 + 500/810 = 9 + 500/810 = 509/810 - So, 1/90 + 50/81 = 509/810
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90+50/81 3/90+50/81 5/90+50/81 7/90+50/81