Subtract 1/63 from 81/40
1st number: 2 1/40, 2nd number: 1/63
81/40 - 1/63 is 5063/2520.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
81/40 = 81 × 63/40 × 63 = 5103/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
1/63 = 1 × 40/63 × 40 = 40/2520 - Subtract the two like fractions:
5103/2520 - 40/2520 = 5103 - 40/2520 = 5063/2520 - In mixed form: 223/2520
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40-2/63 81/80-1/63 81/40-3/63 81/40-5/63 81/40-7/63