Subtract 7/14 from 1/90
1/90 - 7/14 is -22/45.
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,
1/90 = 1 × 7/90 × 7 = 7/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
7/14 = 7 × 45/14 × 45 = 315/630 - Subtract the two like fractions:
7/630 - 315/630 = 7 - 315/630 = -308/630 - After reducing the fraction, the answer is -22/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-7/14 1/90-7/28 3/90-7/14 1/90-21/14 1/90-7/42 5/90-7/14 1/90-35/14 1/90-7/70 7/90-7/14 1/90-49/14 1/90-7/98