Subtract 90/12 from 5/6
1st number: 5/6, 2nd number: 7 6/12
5/6 - 90/12 is -20/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
5/6 = 5 × 2/6 × 2 = 10/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
90/12 = 90 × 1/12 × 1 = 90/12 - Subtract the two like fractions:
10/12 - 90/12 = 10 - 90/12 = -80/12 - After reducing the fraction, the answer is -20/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/6-90/12 5/12-90/12 5/6-90/24 15/6-90/12 5/18-90/12 5/6-90/36 25/6-90/12 5/30-90/12 5/6-90/60 35/6-90/12 5/42-90/12 5/6-90/84