Subtract 8/42 from 5/63
5/63 - 8/42 is -1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
5/63 = 5 × 2/63 × 2 = 10/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
8/42 = 8 × 3/42 × 3 = 24/126 - Subtract the two like fractions:
10/126 - 24/126 = 10 - 24/126 = -14/126 - After reducing the fraction, the answer is -1/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/63-8/42 5/63-16/42 5/63-8/84 15/63-8/42 5/63-24/42 25/63-8/42 5/63-40/42 35/63-8/42 5/63-56/42