Subtract 45/54 from 6/63
6/63 - 45/54 is -31/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 63 × 6 = 378,
6/63 = 6 × 6/63 × 6 = 36/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
45/54 = 45 × 7/54 × 7 = 315/378 - Subtract the two like fractions:
36/378 - 315/378 = 36 - 315/378 = -279/378 - After reducing the fraction, the answer is -31/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/63-45/54 6/63-90/54 18/63-45/54 30/63-45/54 42/63-45/54