Subtract 8/63 from 20/54
20/54 - 8/63 is 46/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
8/63 = 8 × 6/63 × 6 = 48/378 - Subtract the two like fractions:
140/378 - 48/378 = 140 - 48/378 = 92/378 - After reducing the fraction, the answer is 46/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54-8/63 20/54-16/63 60/54-8/63 20/54-24/63 20/54-40/63 20/54-56/63