Subtract 30/9 from 20/63
1st number: 20/63, 2nd number: 3 3/9
20/63 - 30/9 is -190/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 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 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Subtract the two like fractions:
20/63 - 210/63 = 20 - 210/63 = -190/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63-30/9 20/63-60/9 20/63-30/18 60/63-30/9 20/63-90/9 20/63-30/27 20/63-30/45 20/63-30/63