Subtract 40/72 from 2/8
2/8 - 40/72 is -11/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
2/8 = 2 × 9/8 × 9 = 18/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
40/72 = 40 × 1/72 × 1 = 40/72 - Subtract the two like fractions:
18/72 - 40/72 = 18 - 40/72 = -22/72 - After reducing the fraction, the answer is -11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-40/72 2/8-80/72 2/16-40/72 6/8-40/72 2/24-40/72 10/8-40/72 2/40-40/72 14/8-40/72 2/56-40/72