Subtract 63/6 from 63/21
1st number: 3 0/21, 2nd number: 10 3/6
63/21 - 63/6 is -15/2.
Steps for subtracting 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,
63/21 = 63 × 2/21 × 2 = 126/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
63/6 = 63 × 7/6 × 7 = 441/42 - Subtract the two like fractions:
126/42 - 441/42 = 126 - 441/42 = -315/42 - After reducing the fraction, the answer is -15/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-63/6 63/21-63/12 63/21-63/18 63/21-63/30 63/21-63/42