Subtract 7/90 from 10/63
10/63 - 7/90 is 17/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
10/63 = 10 × 10/63 × 10 = 100/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Subtract the two like fractions:
100/630 - 49/630 = 100 - 49/630 = 51/630 - After reducing the fraction, the answer is 17/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/63-7/90 10/63-14/90 30/63-7/90 10/63-21/90 50/63-7/90 10/63-35/90 70/63-7/90 10/63-49/90