Subtract 90/14 from 12/15
1st number: 12/15, 2nd number: 6 6/14
12/15 - 90/14 is -197/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
90/14 = 90 × 15/14 × 15 = 1350/210 - Subtract the two like fractions:
168/210 - 1350/210 = 168 - 1350/210 = -1182/210 - After reducing the fraction, the answer is -197/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-90/14 12/30-90/14 12/15-90/28 36/15-90/14 12/45-90/14 12/15-90/42 60/15-90/14 12/75-90/14 12/15-90/70 84/15-90/14 12/15-90/98