Add 81/42 and 35/18
1st number: 1 39/42, 2nd number: 1 17/18
81/42 + 35/18 is 244/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
81/42 = 81 × 3/42 × 3 = 243/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
35/18 = 35 × 7/18 × 7 = 245/126 - Add the two like fractions:
243/126 + 245/126 = 243 + 245/126 = 488/126 - 488/126 simplified gives 244/63
- So, 81/42 + 35/18 = 244/63
In mixed form: 355/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/42+70/18 81/84+35/18 81/42+35/36 81/42+35/54 81/42+35/90