Subtract 90/8 from 8/12
1st number: 8/12, 2nd number: 11 2/8
8/12 - 90/8 is -127/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
8/12 = 8 × 2/12 × 2 = 16/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
90/8 = 90 × 3/8 × 3 = 270/24 - Subtract the two like fractions:
16/24 - 270/24 = 16 - 270/24 = -254/24 - After reducing the fraction, the answer is -127/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-90/8 8/24-90/8 8/12-90/16 24/12-90/8 8/36-90/8 8/12-90/24 40/12-90/8 8/60-90/8 8/12-90/40 56/12-90/8 8/84-90/8 8/12-90/56