Subtract 40/56 from 40/60
40/60 - 40/56 is -1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 60 × 14 = 840,
40/60 = 40 × 14/60 × 14 = 560/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
40/56 = 40 × 15/56 × 15 = 600/840 - Subtract the two like fractions:
560/840 - 600/840 = 560 - 600/840 = -40/840 - After reducing the fraction, the answer is -1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60-40/56 40/60-80/56