Subtract 6/14 from 7/90
7/90 - 6/14 is -221/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
6/14 = 6 × 45/14 × 45 = 270/630 - Subtract the two like fractions:
49/630 - 270/630 = 49 - 270/630 = -221/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90-6/14 7/90-12/14 7/90-6/28 21/90-6/14 7/90-18/14 7/90-6/42 35/90-6/14 7/90-30/14 7/90-6/70 49/90-6/14 7/90-42/14 7/90-6/98