Subtract 8/9 from 10/70
10/70 - 8/9 is -47/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
10/70 = 10 × 9/70 × 9 = 90/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
8/9 = 8 × 70/9 × 70 = 560/630 - Subtract the two like fractions:
90/630 - 560/630 = 90 - 560/630 = -470/630 - After reducing the fraction, the answer is -47/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70-8/9 10/70-16/9 10/70-8/18 30/70-8/9 10/70-24/9 10/70-8/27 50/70-8/9 10/70-40/9 10/70-8/45 10/70-56/9 10/70-8/63