Add 24/5 and 7/21
1st number: 4 4/5, 2nd number: 7/21
24/5 + 7/21 is 77/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
24/5 = 24 × 21/5 × 21 = 504/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
7/21 = 7 × 5/21 × 5 = 35/105 - Add the two like fractions:
504/105 + 35/105 = 504 + 35/105 = 539/105 - 539/105 simplified gives 77/15
- So, 24/5 + 7/21 = 77/15
In mixed form: 52/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/5+7/21 24/5+14/21 24/10+7/21 24/5+7/42 72/5+7/21 24/15+7/21 24/5+7/63 24/5+35/21 24/25+7/21 24/5+49/21 24/35+7/21