Subtract 12/42 from 1/24
1/24 - 12/42 is -41/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
1/24 = 1 × 7/24 × 7 = 7/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
12/42 = 12 × 4/42 × 4 = 48/168 - Subtract the two like fractions:
7/168 - 48/168 = 7 - 48/168 = -41/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/24-12/42 1/24-24/42 1/48-12/42 1/24-12/84 3/24-12/42 1/24-36/42 1/72-12/42 5/24-12/42 1/24-60/42 7/24-12/42 1/24-84/42