Subtract 8/45 from 40/56
40/56 - 8/45 is 169/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
40/56 = 40 × 45/56 × 45 = 1800/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
8/45 = 8 × 56/45 × 56 = 448/2520 - Subtract the two like fractions:
1800/2520 - 448/2520 = 1800 - 448/2520 = 1352/2520 - After reducing the fraction, the answer is 169/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56-8/45 40/56-16/45 40/56-8/90 40/56-24/45 40/56-40/45 40/56-56/45