Add 63/21 and 3/18
1st number: 3 0/21, 2nd number: 3/18
63/21 + 3/18 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
63/21 = 63 × 6/21 × 6 = 378/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Add the two like fractions:
378/126 + 21/126 = 378 + 21/126 = 399/126 - 399/126 simplified gives 19/6
- So, 63/21 + 3/18 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21+6/18 63/42+3/18 63/21+3/36 63/21+9/18 63/21+3/54 63/21+15/18 63/21+3/90 63/21+21/18