Add 1/84 and 3/42
1/84 + 3/42 is 1/12.
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,
1/84 = 1 × 1/84 × 1 = 1/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Add the two like fractions:
1/84 + 6/84 = 1 + 6/84 = 7/84 - 7/84 simplified gives 1/12
- So, 1/84 + 3/42 = 1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84+3/42 1/84+6/42 1/84+3/84 3/84+3/42 1/84+9/42 5/84+3/42 1/84+15/42 7/84+3/42 1/84+21/42