Subtract 10/90 from 80/63
1st number: 1 17/63, 2nd number: 10/90
80/63 - 10/90 is 73/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
80/63 = 80 × 10/63 × 10 = 800/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Subtract the two like fractions:
800/630 - 70/630 = 800 - 70/630 = 730/630 - After reducing the fraction, the answer is 73/63
- In mixed form: 110/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-20/90 80/63-30/90 80/63-50/90 80/63-70/90