Add 18/21 and 98/56
1st number: 18/21, 2nd number: 1 42/56
18/21 + 98/56 is 73/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
18/21 = 18 × 8/21 × 8 = 144/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
98/56 = 98 × 3/56 × 3 = 294/168 - Add the two like fractions:
144/168 + 294/168 = 144 + 294/168 = 438/168 - 438/168 simplified gives 73/28
- So, 18/21 + 98/56 = 73/28
In mixed form: 217/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+98/56 18/42+98/56 54/21+98/56 18/63+98/56 90/21+98/56