Add 3/42 and 12/4
1st number: 3/42, 2nd number: 3 0/4
3/42 + 12/4 is 43/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
12/4 = 12 × 21/4 × 21 = 252/84 - Add the two like fractions:
6/84 + 252/84 = 6 + 252/84 = 258/84 - 258/84 simplified gives 43/14
- So, 3/42 + 12/4 = 43/14
In mixed form: 31/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+12/4 3/42+24/4 3/84+12/4 3/42+12/8 9/42+12/4 3/42+36/4 15/42+12/4 3/42+60/4 3/42+12/20 21/42+12/4 3/42+84/4 3/42+12/28