Subtract 81/56 from 10/90
1st number: 10/90, 2nd number: 1 25/56
10/90 - 81/56 is -673/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
10/90 = 10 × 28/90 × 28 = 280/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
81/56 = 81 × 45/56 × 45 = 3645/2520 - Subtract the two like fractions:
280/2520 - 3645/2520 = 280 - 3645/2520 = -3365/2520 - After reducing the fraction, the answer is -673/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90-81/56 30/90-81/56 50/90-81/56 70/90-81/56