Subtract 42/18 from 16/27
1st number: 16/27, 2nd number: 2 6/18
16/27 - 42/18 is -47/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
16/27 = 16 × 2/27 × 2 = 32/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Subtract the two like fractions:
32/54 - 126/54 = 32 - 126/54 = -94/54 - After reducing the fraction, the answer is -47/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/27-42/18 16/27-84/18 16/54-42/18 16/27-42/36 48/27-42/18 16/81-42/18 16/27-42/54 80/27-42/18 16/27-42/90