Add 24/18 and 15/21
1st number: 1 6/18, 2nd number: 15/21
24/18 + 15/21 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
24/18 = 24 × 7/18 × 7 = 168/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
15/21 = 15 × 6/21 × 6 = 90/126 - Add the two like fractions:
168/126 + 90/126 = 168 + 90/126 = 258/126 - 258/126 simplified gives 43/21
- So, 24/18 + 15/21 = 43/21
In mixed form: 21/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/18+15/21 24/18+30/21 24/36+15/21 24/18+15/42 72/18+15/21 24/18+45/21 24/54+15/21 24/18+15/63 24/18+75/21 24/90+15/21