Subtract 42/24 from 40/27
1st number: 1 13/27, 2nd number: 1 18/24
40/27 - 42/24 is -29/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
40/27 = 40 × 8/27 × 8 = 320/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
42/24 = 42 × 9/24 × 9 = 378/216 - Subtract the two like fractions:
320/216 - 378/216 = 320 - 378/216 = -58/216 - After reducing the fraction, the answer is -29/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/27-42/24 40/27-84/24 40/54-42/24 40/27-42/48 40/81-42/24 40/27-42/72