Add 6/90 and 70/81
6/90 + 70/81 is 377/405.
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,
6/90 = 6 × 9/90 × 9 = 54/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
70/81 = 70 × 10/81 × 10 = 700/810 - Add the two like fractions:
54/810 + 700/810 = 54 + 700/810 = 754/810 - 754/810 simplified gives 377/405
- So, 6/90 + 70/81 = 377/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/90+70/81 18/90+70/81 30/90+70/81 42/90+70/81