Subtract 10/45 from 8/63
8/63 - 10/45 is -2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
8/63 = 8 × 5/63 × 5 = 40/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
10/45 = 10 × 7/45 × 7 = 70/315 - Subtract the two like fractions:
40/315 - 70/315 = 40 - 70/315 = -30/315 - After reducing the fraction, the answer is -2/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/63-10/45 8/63-20/45 8/63-10/90 24/63-10/45 8/63-30/45 40/63-10/45 8/63-50/45 56/63-10/45 8/63-70/45