Subtract 42/50 from 18/10
1st number: 1 8/10, 2nd number: 42/50
18/10 - 42/50 is 24/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 50 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 10 × 5 = 50,
18/10 = 18 × 5/10 × 5 = 90/50 - Likewise, for the 2nd fraction, since 50 × 1 = 50,
42/50 = 42 × 1/50 × 1 = 42/50 - Subtract the two like fractions:
90/50 - 42/50 = 90 - 42/50 = 48/50 - After reducing the fraction, the answer is 24/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-42/50 18/10-84/50 18/20-42/50 54/10-42/50 18/30-42/50 90/10-42/50 18/50-42/50 18/70-42/50