Add 21/12 and 98/56
1st number: 1 9/12, 2nd number: 1 42/56
21/12 + 98/56 is 7/2.
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,
98/56 = 98 × 3/56 × 3 = 294/168 - Add the two like fractions:
294/168 + 294/168 = 294 + 294/168 = 588/168 - 588/168 simplified gives 7/2
- So, 21/12 + 98/56 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+98/56 21/24+98/56 63/12+98/56 21/36+98/56 21/60+98/56 21/84+98/56