Subtract 1/63 from 75/21
1st number: 3 12/21, 2nd number: 1/63
75/21 - 1/63 is 32/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
75/21 = 75 × 3/21 × 3 = 225/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
1/63 = 1 × 1/63 × 1 = 1/63 - Subtract the two like fractions:
225/63 - 1/63 = 225 - 1/63 = 224/63 - After reducing the fraction, the answer is 32/9
- In mixed form: 35/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/21-2/63 75/42-1/63 75/21-3/63 75/63-1/63 75/21-5/63 75/21-7/63