Add 6/21 and 4/42
6/21 + 4/42 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
4/42 = 4 × 1/42 × 1 = 4/42 - Add the two like fractions:
12/42 + 4/42 = 12 + 4/42 = 16/42 - 16/42 simplified gives 8/21
- So, 6/21 + 4/42 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+4/42 6/21+8/42 6/42+4/42 6/21+4/84 18/21+4/42 6/21+12/42 6/63+4/42 30/21+4/42 6/21+20/42 42/21+4/42 6/21+28/42