Subtract 90/10 from 4/5
1st number: 4/5, 2nd number: 9 0/10
4/5 - 90/10 is -41/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
4/5 = 4 × 2/5 × 2 = 8/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
90/10 = 90 × 1/10 × 1 = 90/10 - Subtract the two like fractions:
8/10 - 90/10 = 8 - 90/10 = -82/10 - After reducing the fraction, the answer is -41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-90/10 4/10-90/10 4/5-90/20 12/5-90/10 4/15-90/10 4/5-90/30 20/5-90/10 4/25-90/10 4/5-90/50 28/5-90/10 4/35-90/10 4/5-90/70