Add 25/42 and 12/9
1st number: 25/42, 2nd number: 1 3/9
25/42 + 12/9 is 27/14.
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,
25/42 = 25 × 3/42 × 3 = 75/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
12/9 = 12 × 14/9 × 14 = 168/126 - Add the two like fractions:
75/126 + 168/126 = 75 + 168/126 = 243/126 - 243/126 simplified gives 27/14
- So, 25/42 + 12/9 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+12/9 25/42+24/9 25/84+12/9 25/42+12/18 75/42+12/9 25/42+36/9 25/42+12/27 25/42+60/9 25/42+12/45 25/42+84/9 25/42+12/63