Add 10/42 and 30/12
1st number: 10/42, 2nd number: 2 6/12
10/42 + 30/12 is 115/42.
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,
10/42 = 10 × 2/42 × 2 = 20/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Add the two like fractions:
20/84 + 210/84 = 20 + 210/84 = 230/84 - 230/84 simplified gives 115/42
- So, 10/42 + 30/12 = 115/42
In mixed form: 231/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+30/12 10/42+60/12 10/84+30/12 10/42+30/24 30/42+30/12 10/42+90/12 10/42+30/36 50/42+30/12 10/42+30/60 70/42+30/12 10/42+30/84