Subtract 6/63 from 81/30
1st number: 2 21/30, 2nd number: 6/63
81/30 - 6/63 is 547/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
81/30 = 81 × 21/30 × 21 = 1701/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
6/63 = 6 × 10/63 × 10 = 60/630 - Subtract the two like fractions:
1701/630 - 60/630 = 1701 - 60/630 = 1641/630 - After reducing the fraction, the answer is 547/210
- In mixed form: 2127/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30-12/63 81/60-6/63 81/30-18/63 81/90-6/63 81/30-30/63 81/30-42/63