Add 5/10 and 20/81
5/10 + 20/81 is 121/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
5/10 = 5 × 81/10 × 81 = 405/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
20/81 = 20 × 10/81 × 10 = 200/810 - Add the two like fractions:
405/810 + 200/810 = 405 + 200/810 = 605/810 - 605/810 simplified gives 121/162
- So, 5/10 + 20/81 = 121/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10+40/81 5/20+20/81 15/10+20/81 5/10+60/81 5/30+20/81 25/10+20/81 5/50+20/81 35/10+20/81 5/70+20/81