Add 20/5 and 10/81
1st number: 4 0/5, 2nd number: 10/81
20/5 + 10/81 is 334/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
20/5 = 20 × 81/5 × 81 = 1620/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
10/81 = 10 × 5/81 × 5 = 50/405 - Add the two like fractions:
1620/405 + 50/405 = 1620 + 50/405 = 1670/405 - 1670/405 simplified gives 334/81
- So, 20/5 + 10/81 = 334/81
In mixed form: 410/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+10/81 20/5+20/81 20/10+10/81 60/5+10/81 20/5+30/81 20/15+10/81 20/5+50/81 20/25+10/81 20/5+70/81 20/35+10/81