Subtract 12/63 from 81/4
1st number: 20 1/4, 2nd number: 12/63
81/4 - 12/63 is 1685/84.
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,
12/63 = 12 × 4/63 × 4 = 48/252 - Subtract the two like fractions:
5103/252 - 48/252 = 5103 - 48/252 = 5055/252 - After reducing the fraction, the answer is 1685/84
- In mixed form: 205/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-24/63 81/8-12/63 81/4-36/63 81/12-12/63 81/4-60/63 81/20-12/63 81/4-84/63 81/28-12/63