Add 10/45 and 5/81
10/45 + 5/81 is 23/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
10/45 = 10 × 9/45 × 9 = 90/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
5/81 = 5 × 5/81 × 5 = 25/405 - Add the two like fractions:
90/405 + 25/405 = 90 + 25/405 = 115/405 - 115/405 simplified gives 23/81
- So, 10/45 + 5/81 = 23/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+5/81 10/45+10/81 10/90+5/81 30/45+5/81 10/45+15/81 50/45+5/81 10/45+25/81 70/45+5/81 10/45+35/81