Subtract 5/80 from 45/25
1st number: 1 20/25, 2nd number: 5/80
45/25 - 5/80 is 139/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
45/25 = 45 × 16/25 × 16 = 720/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
5/80 = 5 × 5/80 × 5 = 25/400 - Subtract the two like fractions:
720/400 - 25/400 = 720 - 25/400 = 695/400 - After reducing the fraction, the answer is 139/80
- In mixed form: 159/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-5/80 45/25-10/80 45/50-5/80 45/25-15/80 45/75-5/80 45/25-25/80 45/25-35/80