Subtract 90/15 from 8/14
1st number: 8/14, 2nd number: 6 0/15
8/14 - 90/15 is -38/7.
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,
8/14 = 8 × 15/14 × 15 = 120/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Subtract the two like fractions:
120/210 - 1260/210 = 120 - 1260/210 = -1140/210 - After reducing the fraction, the answer is -38/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/14-90/15 8/28-90/15 8/14-90/30 24/14-90/15 8/42-90/15 8/14-90/45 40/14-90/15 8/70-90/15 8/14-90/75 56/14-90/15 8/98-90/15