Subtract 2/40 from 18/24
18/24 - 2/40 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
2/40 = 2 × 3/40 × 3 = 6/120 - Subtract the two like fractions:
90/120 - 6/120 = 90 - 6/120 = 84/120 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-2/40 18/24-4/40 18/48-2/40 18/24-2/80 54/24-2/40 18/24-6/40 18/72-2/40 90/24-2/40 18/24-10/40 18/24-14/40