Add 10/42 and 9/84
10/42 + 9/84 is 29/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
10/42 = 10 × 2/42 × 2 = 20/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
9/84 = 9 × 1/84 × 1 = 9/84 - Add the two like fractions:
20/84 + 9/84 = 20 + 9/84 = 29/84 - So, 10/42 + 9/84 = 29/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+9/84 10/42+18/84 10/84+9/84 30/42+9/84 10/42+27/84 50/42+9/84 10/42+45/84 70/42+9/84 10/42+63/84