Add 6/42 and 4/21
6/42 + 4/21 is 1/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
6/42 = 6 × 1/42 × 1 = 6/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
4/21 = 4 × 2/21 × 2 = 8/42 - Add the two like fractions:
6/42 + 8/42 = 6 + 8/42 = 14/42 - 14/42 simplified gives 1/3
- So, 6/42 + 4/21 = 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42+4/21 6/42+8/21 6/84+4/21 6/42+4/42 18/42+4/21 6/42+12/21 6/42+4/63 30/42+4/21 6/42+20/21 6/42+28/21