Add 3/90 and 1/81
3/90 + 1/81 is 37/810.
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,
3/90 = 3 × 9/90 × 9 = 27/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
1/81 = 1 × 10/81 × 10 = 10/810 - Add the two like fractions:
27/810 + 10/810 = 27 + 10/810 = 37/810 - So, 3/90 + 1/81 = 37/810
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+1/81 3/90+2/81 9/90+1/81 3/90+3/81 15/90+1/81 3/90+5/81 21/90+1/81 3/90+7/81