Subtract 45/70 from 10/63
10/63 - 45/70 is -61/126.
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,
10/63 = 10 × 10/63 × 10 = 100/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
45/70 = 45 × 9/70 × 9 = 405/630 - Subtract the two like fractions:
100/630 - 405/630 = 100 - 405/630 = -305/630 - After reducing the fraction, the answer is -61/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/63-45/70 10/63-90/70 30/63-45/70 50/63-45/70 70/63-45/70