Add 4/42 and 9/12
4/42 + 9/12 is 71/84.
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,
4/42 = 4 × 2/42 × 2 = 8/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84 - Add the two like fractions:
8/84 + 63/84 = 8 + 63/84 = 71/84 - So, 4/42 + 9/12 = 71/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+9/12 4/42+18/12 4/84+9/12 4/42+9/24 12/42+9/12 4/42+27/12 4/42+9/36 20/42+9/12 4/42+45/12 4/42+9/60 28/42+9/12 4/42+63/12 4/42+9/84