Subtract 40/20 from 7/56
1st number: 7/56, 2nd number: 2 0/20
7/56 - 40/20 is -15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
7/56 = 7 × 5/56 × 5 = 35/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
40/20 = 40 × 14/20 × 14 = 560/280 - Subtract the two like fractions:
35/280 - 560/280 = 35 - 560/280 = -525/280 - After reducing the fraction, the answer is -15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/56-40/20 7/56-80/20 21/56-40/20 7/56-40/60 35/56-40/20 49/56-40/20