Subtract 18/40 from 10/56
10/56 - 18/40 is -19/70.
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,
10/56 = 10 × 5/56 × 5 = 50/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Subtract the two like fractions:
50/280 - 126/280 = 50 - 126/280 = -76/280 - After reducing the fraction, the answer is -19/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/56-18/40 10/56-36/40 10/56-18/80 30/56-18/40 10/56-54/40 50/56-18/40 10/56-90/40 70/56-18/40