Add 42/18 and 1/81
1st number: 2 6/18, 2nd number: 1/81
42/18 + 1/81 is 190/81.
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,
42/18 = 42 × 9/18 × 9 = 378/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
1/81 = 1 × 2/81 × 2 = 2/162 - Add the two like fractions:
378/162 + 2/162 = 378 + 2/162 = 380/162 - 380/162 simplified gives 190/81
- So, 42/18 + 1/81 = 190/81
In mixed form: 228/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+1/81 42/18+2/81 42/36+1/81 42/18+3/81 42/54+1/81 42/18+5/81 42/90+1/81 42/18+7/81