Subtract 7/63 from 81/4
1st number: 20 1/4, 2nd number: 7/63
81/4 - 7/63 is 725/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 4 × 63 = 252,
81/4 = 81 × 63/4 × 63 = 5103/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
7/63 = 7 × 4/63 × 4 = 28/252 - Subtract the two like fractions:
5103/252 - 28/252 = 5103 - 28/252 = 5075/252 - After reducing the fraction, the answer is 725/36
- In mixed form: 205/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-14/63 81/8-7/63 81/4-21/63 81/12-7/63 81/4-35/63 81/20-7/63 81/4-49/63 81/28-7/63