Subtract 4/80 from 56/45
1st number: 1 11/45, 2nd number: 4/80
56/45 - 4/80 is 43/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
56/45 = 56 × 16/45 × 16 = 896/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
4/80 = 4 × 9/80 × 9 = 36/720 - Subtract the two like fractions:
896/720 - 36/720 = 896 - 36/720 = 860/720 - After reducing the fraction, the answer is 43/36
- In mixed form: 17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-8/80 56/90-4/80 56/45-12/80 56/45-20/80 56/45-28/80