Subtract 7/42 from 5/63
5/63 - 7/42 is -11/126.
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,
7/42 = 7 × 3/42 × 3 = 21/126 - Subtract the two like fractions:
10/126 - 21/126 = 10 - 21/126 = -11/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/63-7/42 5/63-14/42 5/63-7/84 15/63-7/42 5/63-21/42 25/63-7/42 5/63-35/42 35/63-7/42 5/63-49/42