Subtract 45/9 from 8/10
1st number: 8/10, 2nd number: 5 0/9
8/10 - 45/9 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 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 9 × 10 = 90,
45/9 = 45 × 10/9 × 10 = 450/90 - Subtract the two like fractions:
72/90 - 450/90 = 72 - 450/90 = -378/90 - After reducing the fraction, the answer is -21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10-45/9 8/10-90/9 8/20-45/9 8/10-45/18 24/10-45/9 8/30-45/9 8/10-45/27 40/10-45/9 8/50-45/9 56/10-45/9 8/70-45/9 8/10-45/63