Subtract 9/40 from 50/56
50/56 - 9/40 is 187/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
50/56 = 50 × 5/56 × 5 = 250/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
250/280 - 63/280 = 250 - 63/280 = 187/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/56-18/40 50/56-9/80 50/56-27/40 50/56-45/40 50/56-63/40