Add 7/24 and 21/84
7/24 + 21/84 is 13/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
7/24 = 7 × 7/24 × 7 = 49/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
21/84 = 21 × 2/84 × 2 = 42/168 - Add the two like fractions:
49/168 + 42/168 = 49 + 42/168 = 91/168 - 91/168 simplified gives 13/24
- So, 7/24 + 21/84 = 13/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/24+21/84 7/24+42/84 7/48+21/84 21/24+21/84 7/24+63/84 7/72+21/84 35/24+21/84 49/24+21/84