Subtract 7/10 from 30/63
30/63 - 7/10 is -47/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
30/63 = 30 × 10/63 × 10 = 300/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
7/10 = 7 × 63/10 × 63 = 441/630 - Subtract the two like fractions:
300/630 - 441/630 = 300 - 441/630 = -141/630 - After reducing the fraction, the answer is -47/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63-7/10 30/63-14/10 30/63-7/20 90/63-7/10 30/63-21/10 30/63-7/30 30/63-35/10 30/63-7/50 30/63-49/10 30/63-7/70