Add 84/42 and 5/12
1st number: 2 0/42, 2nd number: 5/12
84/42 + 5/12 is 29/12.
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,
84/42 = 84 × 2/42 × 2 = 168/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
5/12 = 5 × 7/12 × 7 = 35/84 - Add the two like fractions:
168/84 + 35/84 = 168 + 35/84 = 203/84 - 203/84 simplified gives 29/12
- So, 84/42 + 5/12 = 29/12
In mixed form: 25/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42+10/12 84/42+5/24 84/42+15/12 84/42+5/36 84/42+25/12 84/42+5/60 84/42+35/12 84/42+5/84