Add 21/36 and 24/56
21/36 + 24/56 is 85/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 36 × 14 = 504,
21/36 = 21 × 14/36 × 14 = 294/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
24/56 = 24 × 9/56 × 9 = 216/504 - Add the two like fractions:
294/504 + 216/504 = 294 + 216/504 = 510/504 - 510/504 simplified gives 85/84
- So, 21/36 + 24/56 = 85/84
In mixed form: 11/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+24/56 21/36+48/56 21/72+24/56 63/36+24/56 21/36+72/56