Subtract 70/63 from 8/70
1st number: 8/70, 2nd number: 1 7/63
8/70 - 70/63 is -314/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
8/70 = 8 × 9/70 × 9 = 72/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Subtract the two like fractions:
72/630 - 700/630 = 72 - 700/630 = -628/630 - After reducing the fraction, the answer is -314/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70-70/63 24/70-70/63 40/70-70/63 56/70-70/63