Subtract 18/60 from 8/40
8/40 - 18/60 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
18/60 = 18 × 2/60 × 2 = 36/120 - Subtract the two like fractions:
24/120 - 36/120 = 24 - 36/120 = -12/120 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-18/60 8/40-36/60 8/80-18/60 24/40-18/60 8/40-54/60 8/40-90/60 56/40-18/60