Subtract 45/40 from 80/36
1st number: 2 8/36, 2nd number: 1 5/40
80/36 - 45/40 is 79/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
80/36 = 80 × 10/36 × 10 = 800/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Subtract the two like fractions:
800/360 - 405/360 = 800 - 405/360 = 395/360 - After reducing the fraction, the answer is 79/72
- In mixed form: 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/36-90/40 80/72-45/40 80/36-45/80