Subtract 5/90 from 3/63
3/63 - 5/90 is -1/126.
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,
3/63 = 3 × 10/63 × 10 = 30/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630 - Subtract the two like fractions:
30/630 - 35/630 = 30 - 35/630 = -5/630 - After reducing the fraction, the answer is -1/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-5/90 3/63-10/90 9/63-5/90 3/63-15/90 15/63-5/90 3/63-25/90 21/63-5/90 3/63-35/90