Subtract 8/63 from 12/30
12/30 - 8/63 is 86/315.
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,
12/30 = 12 × 21/30 × 21 = 252/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
8/63 = 8 × 10/63 × 10 = 80/630 - Subtract the two like fractions:
252/630 - 80/630 = 252 - 80/630 = 172/630 - After reducing the fraction, the answer is 86/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30-8/63 12/30-16/63 12/60-8/63 36/30-8/63 12/30-24/63 12/90-8/63 60/30-8/63 12/30-40/63 84/30-8/63 12/30-56/63