Subtract 90/15 from 7/14
1st number: 7/14, 2nd number: 6 0/15
7/14 - 90/15 is -11/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
7/14 = 7 × 15/14 × 15 = 105/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Subtract the two like fractions:
105/210 - 1260/210 = 105 - 1260/210 = -1155/210 - After reducing the fraction, the answer is -11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/28-90/15 7/14-90/30 21/14-90/15 7/42-90/15 7/14-90/45 35/14-90/15 7/70-90/15 7/14-90/75 49/14-90/15 7/98-90/15