Subtract 63/21 from 75/6
1st number: 12 3/6, 2nd number: 3 0/21
75/6 - 63/21 is 19/2.
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,
75/6 = 75 × 7/6 × 7 = 525/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42 - Subtract the two like fractions:
525/42 - 126/42 = 525 - 126/42 = 399/42 - After reducing the fraction, the answer is 19/2
- In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/12-63/21 75/6-63/42 75/18-63/21 75/30-63/21 75/42-63/21