Subtract 15/54 from 3/63
3/63 - 15/54 is -29/126.
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,
3/63 = 3 × 6/63 × 6 = 18/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378 - Subtract the two like fractions:
18/378 - 105/378 = 18 - 105/378 = -87/378 - After reducing the fraction, the answer is -29/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-15/54 3/63-30/54 9/63-15/54 3/63-45/54 15/63-15/54 3/63-75/54 21/63-15/54