Add 2/20 and 20/81
2/20 + 20/81 is 281/810.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
2/20 = 2 × 81/20 × 81 = 162/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
20/81 = 20 × 20/81 × 20 = 400/1620 - Add the two like fractions:
162/1620 + 400/1620 = 162 + 400/1620 = 562/1620 - 562/1620 simplified gives 281/810
- So, 2/20 + 20/81 = 281/810
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20+20/81 2/20+40/81 2/40+20/81 6/20+20/81 2/20+60/81 2/60+20/81 10/20+20/81 14/20+20/81