Subtract 1/80 from 18/75
18/75 - 1/80 is 91/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
18/75 = 18 × 16/75 × 16 = 288/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
1/80 = 1 × 15/80 × 15 = 15/1200 - Subtract the two like fractions:
288/1200 - 15/1200 = 288 - 15/1200 = 273/1200 - After reducing the fraction, the answer is 91/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/75-1/80 18/75-2/80 54/75-1/80 18/75-3/80 90/75-1/80 18/75-5/80 18/75-7/80