Subtract 40/50 from 4/8
4/8 - 40/50 is -3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 8 × 25 = 200,
4/8 = 4 × 25/8 × 25 = 100/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
40/50 = 40 × 4/50 × 4 = 160/200 - Subtract the two like fractions:
100/200 - 160/200 = 100 - 160/200 = -60/200 - After reducing the fraction, the answer is -3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-80/50 4/16-40/50 12/8-40/50 4/24-40/50 20/8-40/50 4/40-40/50 28/8-40/50 4/56-40/50