Subtract 28/90 from 1/14
1/14 - 28/90 is -151/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
1/14 = 1 × 45/14 × 45 = 45/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Subtract the two like fractions:
45/630 - 196/630 = 45 - 196/630 = -151/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/14-28/90 1/14-56/90 1/28-28/90 3/14-28/90 1/14-84/90 1/42-28/90 5/14-28/90 1/70-28/90 7/14-28/90 1/98-28/90