Add 21/56 and 12/9
1st number: 21/56, 2nd number: 1 3/9
21/56 + 12/9 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 9 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 9 × 56 = 504,
12/9 = 12 × 56/9 × 56 = 672/504 - Add the two like fractions:
189/504 + 672/504 = 189 + 672/504 = 861/504 - 861/504 simplified gives 41/24
- So, 21/56 + 12/9 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+12/9 21/56+24/9 21/56+12/18 63/56+12/9 21/56+36/9 21/56+12/27 21/56+60/9 21/56+12/45 21/56+84/9 21/56+12/63