Subtract 42/15 from 75/18
1st number: 4 3/18, 2nd number: 2 12/15
75/18 - 42/15 is 41/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
75/18 = 75 × 5/18 × 5 = 375/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
42/15 = 42 × 6/15 × 6 = 252/90 - Subtract the two like fractions:
375/90 - 252/90 = 375 - 252/90 = 123/90 - After reducing the fraction, the answer is 41/30
- In mixed form: 111/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/18-84/15 75/36-42/15 75/18-42/30 75/54-42/15 75/18-42/45 75/90-42/15 75/18-42/75