Subtract 42/12 from 1/8
1st number: 1/8, 2nd number: 3 6/12
1/8 - 42/12 is -27/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
1/8 = 1 × 3/8 × 3 = 3/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
42/12 = 42 × 2/12 × 2 = 84/24 - Subtract the two like fractions:
3/24 - 84/24 = 3 - 84/24 = -81/24 - After reducing the fraction, the answer is -27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-42/12 1/8-84/12 1/16-42/12 1/8-42/24 3/8-42/12 1/24-42/12 1/8-42/36 5/8-42/12 1/40-42/12 1/8-42/60 7/8-42/12 1/56-42/12 1/8-42/84