Subtract 7/90 from 2/63
2/63 - 7/90 is -29/630.
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,
2/63 = 2 × 10/63 × 10 = 20/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Subtract the two like fractions:
20/630 - 49/630 = 20 - 49/630 = -29/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/63-7/90 2/63-14/90 6/63-7/90 2/63-21/90 10/63-7/90 2/63-35/90 14/63-7/90 2/63-49/90