Subtract 10/81 from 80/63
1st number: 1 17/63, 2nd number: 10/81
80/63 - 10/81 is 650/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
80/63 = 80 × 9/63 × 9 = 720/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
10/81 = 10 × 7/81 × 7 = 70/567 - Subtract the two like fractions:
720/567 - 70/567 = 720 - 70/567 = 650/567 - In mixed form: 183/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-20/81 80/63-30/81 80/63-50/81 80/63-70/81