Subtract 45/42 from 4/27
1st number: 4/27, 2nd number: 1 3/42
4/27 - 45/42 is -349/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
4/27 = 4 × 14/27 × 14 = 56/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
45/42 = 45 × 9/42 × 9 = 405/378 - Subtract the two like fractions:
56/378 - 405/378 = 56 - 405/378 = -349/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27-45/42 4/27-90/42 4/54-45/42 4/27-45/84 12/27-45/42 4/81-45/42 20/27-45/42 28/27-45/42