Add 9/42 and 45/12
1st number: 9/42, 2nd number: 3 9/12
9/42 + 45/12 is 111/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Add the two like fractions:
18/84 + 315/84 = 18 + 315/84 = 333/84 - 333/84 simplified gives 111/28
- So, 9/42 + 45/12 = 111/28
In mixed form: 327/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+45/12 9/42+90/12 9/84+45/12 9/42+45/24 27/42+45/12 9/42+45/36 45/42+45/12 9/42+45/60 63/42+45/12 9/42+45/84