Add 1/42 and 27/18
1st number: 1/42, 2nd number: 1 9/18
1/42 + 27/18 is 32/21.
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,
1/42 = 1 × 3/42 × 3 = 3/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
27/18 = 27 × 7/18 × 7 = 189/126 - Add the two like fractions:
3/126 + 189/126 = 3 + 189/126 = 192/126 - 192/126 simplified gives 32/21
- So, 1/42 + 27/18 = 32/21
In mixed form: 111/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42+27/18 1/42+54/18 1/84+27/18 1/42+27/36 3/42+27/18 1/42+81/18 1/42+27/54 5/42+27/18 1/42+27/90 7/42+27/18