Add 20/18 and 32/81
1st number: 1 2/18, 2nd number: 32/81
20/18 + 32/81 is 122/81.
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,
32/81 = 32 × 2/81 × 2 = 64/162 - Add the two like fractions:
180/162 + 64/162 = 180 + 64/162 = 244/162 - 244/162 simplified gives 122/81
- So, 20/18 + 32/81 = 122/81
In mixed form: 141/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+32/81 20/18+64/81 20/36+32/81 60/18+32/81 20/18+96/81 20/54+32/81 20/90+32/81