Subtract 49/40 from 20/50
1st number: 20/50, 2nd number: 1 9/40
20/50 - 49/40 is -33/40.
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,
20/50 = 20 × 4/50 × 4 = 80/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
49/40 = 49 × 5/40 × 5 = 245/200 - Subtract the two like fractions:
80/200 - 245/200 = 80 - 245/200 = -165/200 - After reducing the fraction, the answer is -33/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50-49/40 20/50-98/40 20/50-49/80 60/50-49/40