Subtract 27/45 from 75/42
1st number: 1 33/42, 2nd number: 27/45
75/42 - 27/45 is 83/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
75/42 = 75 × 15/42 × 15 = 1125/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
27/45 = 27 × 14/45 × 14 = 378/630 - Subtract the two like fractions:
1125/630 - 378/630 = 1125 - 378/630 = 747/630 - After reducing the fraction, the answer is 83/70
- In mixed form: 113/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42-54/45 75/84-27/45 75/42-27/90 75/42-81/45