Subtract 1/7 from 20/63
20/63 - 1/7 is 11/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
1/7 = 1 × 9/7 × 9 = 9/63 - Subtract the two like fractions:
20/63 - 9/63 = 20 - 9/63 = 11/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63-1/7 20/63-2/7 20/63-1/14 60/63-1/7 20/63-3/7 20/63-1/21 20/63-5/7 20/63-1/35 20/63-1/49