Add 4/21 and 2/4
4/21 + 2/4 is 29/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
4/21 = 4 × 4/21 × 4 = 16/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
2/4 = 2 × 21/4 × 21 = 42/84 - Add the two like fractions:
16/84 + 42/84 = 16 + 42/84 = 58/84 - 58/84 simplified gives 29/42
- So, 4/21 + 2/4 = 29/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+2/4 4/42+2/4 4/21+2/8 12/21+2/4 4/21+6/4 4/63+2/4 4/21+2/12 20/21+2/4 4/21+10/4 4/21+2/20 28/21+2/4 4/21+14/4 4/21+2/28