Subtract 8/30 from 3/63
3/63 - 8/30 is -23/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 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 30 × 21 = 630,
8/30 = 8 × 21/30 × 21 = 168/630 - Subtract the two like fractions:
30/630 - 168/630 = 30 - 168/630 = -138/630 - After reducing the fraction, the answer is -23/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-8/30 3/63-16/30 3/63-8/60 9/63-8/30 3/63-24/30 3/63-8/90 15/63-8/30 3/63-40/30 21/63-8/30 3/63-56/30