Add 1/20 and 8/81
1/20 + 8/81 is 241/1620.
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,
1/20 = 1 × 81/20 × 81 = 81/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
8/81 = 8 × 20/81 × 20 = 160/1620 - Add the two like fractions:
81/1620 + 160/1620 = 81 + 160/1620 = 241/1620 - So, 1/20 + 8/81 = 241/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+8/81 1/20+16/81 1/40+8/81 3/20+8/81 1/20+24/81 1/60+8/81 5/20+8/81 1/20+40/81 7/20+8/81 1/20+56/81