Subtract 20/63 from 7/9
7/9 - 20/63 is 29/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
7/9 = 7 × 7/9 × 7 = 49/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Subtract the two like fractions:
49/63 - 20/63 = 49 - 20/63 = 29/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-20/63 7/9-40/63 7/18-20/63 21/9-20/63 7/9-60/63 7/27-20/63 35/9-20/63 7/45-20/63 49/9-20/63 7/63-20/63