Add 5/21 and 4/24
5/21 + 4/24 is 17/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
4/24 = 4 × 7/24 × 7 = 28/168 - Add the two like fractions:
40/168 + 28/168 = 40 + 28/168 = 68/168 - 68/168 simplified gives 17/42
- So, 5/21 + 4/24 = 17/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+4/24 5/21+8/24 5/42+4/24 5/21+4/48 15/21+4/24 5/21+12/24 5/63+4/24 5/21+4/72 25/21+4/24 5/21+20/24 35/21+4/24 5/21+28/24