Add 18/21 and 63/6
1st number: 18/21, 2nd number: 10 3/6
18/21 + 63/6 is 159/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
63/6 = 63 × 7/6 × 7 = 441/42 - Add the two like fractions:
36/42 + 441/42 = 36 + 441/42 = 477/42 - 477/42 simplified gives 159/14
- So, 18/21 + 63/6 = 159/14
In mixed form: 115/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+63/6 18/42+63/6 18/21+63/12 54/21+63/6 18/63+63/6 18/21+63/18 90/21+63/6 18/21+63/30 18/21+63/42