Add 10/42 and 4/12
10/42 + 4/12 is 4/7.
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,
4/12 = 4 × 7/12 × 7 = 28/84 - Add the two like fractions:
20/84 + 28/84 = 20 + 28/84 = 48/84 - 48/84 simplified gives 4/7
- So, 10/42 + 4/12 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+4/12 10/42+8/12 10/84+4/12 10/42+4/24 30/42+4/12 10/42+4/36 50/42+4/12 10/42+20/12 10/42+4/60 70/42+4/12 10/42+28/12 10/42+4/84