Add 14/12 and 45/42
1st number: 1 2/12, 2nd number: 1 3/42
14/12 + 45/42 is 47/21.
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,
14/12 = 14 × 7/12 × 7 = 98/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Add the two like fractions:
98/84 + 90/84 = 98 + 90/84 = 188/84 - 188/84 simplified gives 47/21
- So, 14/12 + 45/42 = 47/21
In mixed form: 25/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/12+45/42 14/12+90/42 14/24+45/42 14/12+45/84 42/12+45/42 14/36+45/42 70/12+45/42 14/60+45/42 98/12+45/42 14/84+45/42