Subtract 42/75 from 1/54
1/54 - 42/75 is -731/1350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 75 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 54 × 25 = 1350,
1/54 = 1 × 25/54 × 25 = 25/1350 - Likewise, for the 2nd fraction, since 75 × 18 = 1350,
42/75 = 42 × 18/75 × 18 = 756/1350 - Subtract the two like fractions:
25/1350 - 756/1350 = 25 - 756/1350 = -731/1350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/54-42/75 1/54-84/75 3/54-42/75 5/54-42/75 7/54-42/75