Subtract 8/27 from 16/42
16/42 - 8/27 is 16/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
16/42 = 16 × 9/42 × 9 = 144/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
8/27 = 8 × 14/27 × 14 = 112/378 - Subtract the two like fractions:
144/378 - 112/378 = 144 - 112/378 = 32/378 - After reducing the fraction, the answer is 16/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42-8/27 16/42-16/27 16/84-8/27 16/42-8/54 48/42-8/27 16/42-24/27 16/42-8/81 80/42-8/27 16/42-40/27 16/42-56/27