Subtract 7/50 from 20/40
20/40 - 7/50 is 9/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
20/40 = 20 × 5/40 × 5 = 100/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
7/50 = 7 × 4/50 × 4 = 28/200 - Subtract the two like fractions:
100/200 - 28/200 = 100 - 28/200 = 72/200 - After reducing the fraction, the answer is 9/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-14/50 20/80-7/50 60/40-7/50 20/40-21/50 20/40-35/50 20/40-49/50