Subtract 90/80 from 5/10
1st number: 5/10, 2nd number: 1 10/80
5/10 - 90/80 is -5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
5/10 = 5 × 8/10 × 8 = 40/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Subtract the two like fractions:
40/80 - 90/80 = 40 - 90/80 = -50/80 - After reducing the fraction, the answer is -5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/20-90/80 15/10-90/80 5/30-90/80 25/10-90/80 5/50-90/80 35/10-90/80 5/70-90/80