Subtract 18/75 from 8/40
8/40 - 18/75 is -1/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
8/40 = 8 × 15/40 × 15 = 120/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
18/75 = 18 × 8/75 × 8 = 144/600 - Subtract the two like fractions:
120/600 - 144/600 = 120 - 144/600 = -24/600 - After reducing the fraction, the answer is -1/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-18/75 8/40-36/75 8/80-18/75 24/40-18/75 8/40-54/75 8/40-90/75 56/40-18/75