Subtract 20/54 from 4/63
4/63 - 20/54 is -58/189.
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,
4/63 = 4 × 6/63 × 6 = 24/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Subtract the two like fractions:
24/378 - 140/378 = 24 - 140/378 = -116/378 - After reducing the fraction, the answer is -58/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/63-20/54 4/63-40/54 12/63-20/54 4/63-60/54 20/63-20/54 28/63-20/54