Add 3/81 and 1/20
3/81 + 1/20 is 47/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
3/81 = 3 × 20/81 × 20 = 60/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
1/20 = 1 × 81/20 × 81 = 81/1620 - Add the two like fractions:
60/1620 + 81/1620 = 60 + 81/1620 = 141/1620 - 141/1620 simplified gives 47/540
- So, 3/81 + 1/20 = 47/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/81+1/20 3/81+2/20 3/81+1/40 9/81+1/20 3/81+3/20 3/81+1/60 15/81+1/20 3/81+5/20 21/81+1/20 3/81+7/20