Subtract 81/10 from 3/63
1st number: 3/63, 2nd number: 8 1/10
3/63 - 81/10 is -1691/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
3/63 = 3 × 10/63 × 10 = 30/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
81/10 = 81 × 63/10 × 63 = 5103/630 - Subtract the two like fractions:
30/630 - 5103/630 = 30 - 5103/630 = -5073/630 - After reducing the fraction, the answer is -1691/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-81/10 3/63-81/20 9/63-81/10 3/63-81/30 15/63-81/10 3/63-81/50 21/63-81/10 3/63-81/70