Subtract 21/75 from 18/10
1st number: 1 8/10, 2nd number: 21/75
18/10 - 21/75 is 38/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 10 × 15 = 150,
18/10 = 18 × 15/10 × 15 = 270/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Subtract the two like fractions:
270/150 - 42/150 = 270 - 42/150 = 228/150 - After reducing the fraction, the answer is 38/25
- In mixed form: 113/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-21/75 18/10-42/75 18/20-21/75 54/10-21/75 18/10-63/75 18/30-21/75 90/10-21/75 18/50-21/75 18/70-21/75