Add 21/12 and 75/56
1st number: 1 9/12, 2nd number: 1 19/56
21/12 + 75/56 is 173/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
21/12 = 21 × 14/12 × 14 = 294/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
75/56 = 75 × 3/56 × 3 = 225/168 - Add the two like fractions:
294/168 + 225/168 = 294 + 225/168 = 519/168 - 519/168 simplified gives 173/56
- So, 21/12 + 75/56 = 173/56
In mixed form: 35/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+75/56 21/24+75/56 63/12+75/56 21/36+75/56 21/60+75/56 21/84+75/56