Subtract 7/9 from 30/63
30/63 - 7/9 is -19/63.
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,
30/63 = 30 × 1/63 × 1 = 30/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
7/9 = 7 × 7/9 × 7 = 49/63 - Subtract the two like fractions:
30/63 - 49/63 = 30 - 49/63 = -19/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63-7/9 30/63-14/9 30/63-7/18 90/63-7/9 30/63-21/9 30/63-7/27 30/63-35/9 30/63-7/45 30/63-49/9 30/63-7/63