Subtract 7/63 from 81/75
1st number: 1 6/75, 2nd number: 7/63
81/75 - 7/63 is 218/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
81/75 = 81 × 21/75 × 21 = 1701/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
7/63 = 7 × 25/63 × 25 = 175/1575 - Subtract the two like fractions:
1701/1575 - 175/1575 = 1701 - 175/1575 = 1526/1575 - After reducing the fraction, the answer is 218/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/75-14/63 81/75-21/63 81/75-35/63 81/75-49/63