Add 2/42 and 28/84
2/42 + 28/84 is 8/21.
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,
2/42 = 2 × 2/42 × 2 = 4/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
28/84 = 28 × 1/84 × 1 = 28/84 - Add the two like fractions:
4/84 + 28/84 = 4 + 28/84 = 32/84 - 32/84 simplified gives 8/21
- So, 2/42 + 28/84 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+28/84 2/42+56/84 2/84+28/84 6/42+28/84 10/42+28/84 14/42+28/84