Subtract 18/21 from 63/6
1st number: 10 3/6, 2nd number: 18/21
63/6 - 18/21 is 135/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
63/6 = 63 × 7/6 × 7 = 441/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Subtract the two like fractions:
441/42 - 36/42 = 441 - 36/42 = 405/42 - After reducing the fraction, the answer is 135/14
- In mixed form: 99/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/6-36/21 63/12-18/21 63/6-18/42 63/6-54/21 63/18-18/21 63/6-18/63 63/6-90/21 63/30-18/21 63/42-18/21