Subtract 18/40 from 5/50
5/50 - 18/40 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 50 × 4 = 200,
5/50 = 5 × 4/50 × 4 = 20/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
18/40 = 18 × 5/40 × 5 = 90/200 - Subtract the two like fractions:
20/200 - 90/200 = 20 - 90/200 = -70/200 - After reducing the fraction, the answer is -7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/50-18/40 5/50-36/40 5/50-18/80 15/50-18/40 5/50-54/40 25/50-18/40 5/50-90/40 35/50-18/40