Subtract 45/18 from 8/10
1st number: 8/10, 2nd number: 2 9/18
8/10 - 45/18 is -17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
8/10 = 8 × 9/10 × 9 = 72/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Subtract the two like fractions:
72/90 - 225/90 = 72 - 225/90 = -153/90 - After reducing the fraction, the answer is -17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10-45/18 8/10-90/18 8/20-45/18 8/10-45/36 24/10-45/18 8/30-45/18 8/10-45/54 40/10-45/18 8/50-45/18 8/10-45/90 56/10-45/18 8/70-45/18