Add 3/42 and 81/9
1st number: 3/42, 2nd number: 9 0/9
3/42 + 81/9 is 127/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
3/42 = 3 × 3/42 × 3 = 9/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
81/9 = 81 × 14/9 × 14 = 1134/126 - Add the two like fractions:
9/126 + 1134/126 = 9 + 1134/126 = 1143/126 - 1143/126 simplified gives 127/14
- So, 3/42 + 81/9 = 127/14
In mixed form: 91/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+81/9 3/84+81/9 3/42+81/18 9/42+81/9 3/42+81/27 15/42+81/9 3/42+81/45 21/42+81/9 3/42+81/63