Subtract 90/84 from 5/6
1st number: 5/6, 2nd number: 1 6/84
5/6 - 90/84 is -5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
5/6 = 5 × 14/6 × 14 = 70/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Subtract the two like fractions:
70/84 - 90/84 = 70 - 90/84 = -20/84 - After reducing the fraction, the answer is -5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/6-90/84 5/12-90/84 15/6-90/84 5/18-90/84 25/6-90/84 5/30-90/84 35/6-90/84 5/42-90/84