Add 3/42 and 84/56
1st number: 3/42, 2nd number: 1 28/56
3/42 + 84/56 is 11/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
3/42 = 3 × 4/42 × 4 = 12/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
84/56 = 84 × 3/56 × 3 = 252/168 - Add the two like fractions:
12/168 + 252/168 = 12 + 252/168 = 264/168 - 264/168 simplified gives 11/7
- So, 3/42 + 84/56 = 11/7
In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+84/56 3/84+84/56 9/42+84/56 15/42+84/56 21/42+84/56