Add 1/12 and 45/42
1st number: 1/12, 2nd number: 1 3/42
1/12 + 45/42 is 97/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Add the two like fractions:
7/84 + 90/84 = 7 + 90/84 = 97/84 - So, 1/12 + 45/42 = 97/84
In mixed form: 113/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12+45/42 1/12+90/42 1/24+45/42 1/12+45/84 3/12+45/42 1/36+45/42 5/12+45/42 1/60+45/42 7/12+45/42 1/84+45/42