Subtract 25/70 from 8/63
8/63 - 25/70 is -29/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
8/63 = 8 × 10/63 × 10 = 80/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
25/70 = 25 × 9/70 × 9 = 225/630 - Subtract the two like fractions:
80/630 - 225/630 = 80 - 225/630 = -145/630 - After reducing the fraction, the answer is -29/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/63-25/70 8/63-50/70 24/63-25/70 8/63-75/70 40/63-25/70 56/63-25/70