Subtract 18/10 from 20/50
1st number: 20/50, 2nd number: 1 8/10
20/50 - 18/10 is -7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 10 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 50 × 1 = 50,
20/50 = 20 × 1/50 × 1 = 20/50 - Likewise, for the 2nd fraction, since 10 × 5 = 50,
18/10 = 18 × 5/10 × 5 = 90/50 - Subtract the two like fractions:
20/50 - 90/50 = 20 - 90/50 = -70/50 - After reducing the fraction, the answer is -7/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50-18/10 20/50-36/10 20/50-18/20 60/50-18/10 20/50-54/10 20/50-18/30 20/50-90/10 20/50-18/50 20/50-18/70