Add 10/84 and 9/42
10/84 + 9/42 is 1/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Add the two like fractions:
10/84 + 18/84 = 10 + 18/84 = 28/84 - 28/84 simplified gives 1/3
- So, 10/84 + 9/42 = 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84+9/42 10/84+18/42 10/84+9/84 30/84+9/42 10/84+27/42 50/84+9/42 10/84+45/42 70/84+9/42 10/84+63/42