Add 4/42 and 9/7
1st number: 4/42, 2nd number: 1 2/7
4/42 + 9/7 is 29/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
4/42 = 4 × 1/42 × 1 = 4/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
9/7 = 9 × 6/7 × 6 = 54/42 - Add the two like fractions:
4/42 + 54/42 = 4 + 54/42 = 58/42 - 58/42 simplified gives 29/21
- So, 4/42 + 9/7 = 29/21
In mixed form: 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+9/7 4/42+18/7 4/84+9/7 4/42+9/14 12/42+9/7 4/42+27/7 4/42+9/21 20/42+9/7 4/42+45/7 4/42+9/35 28/42+9/7 4/42+63/7 4/42+9/49