Add 20/18 and 8/81
1st number: 1 2/18, 2nd number: 8/81
20/18 + 8/81 is 98/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
20/18 = 20 × 9/18 × 9 = 180/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
8/81 = 8 × 2/81 × 2 = 16/162 - Add the two like fractions:
180/162 + 16/162 = 180 + 16/162 = 196/162 - 196/162 simplified gives 98/81
- So, 20/18 + 8/81 = 98/81
In mixed form: 117/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+8/81 20/18+16/81 20/36+8/81 60/18+8/81 20/18+24/81 20/54+8/81 20/18+40/81 20/90+8/81 20/18+56/81