Subtract 10/42 from 54/27
1st number: 2 0/27, 2nd number: 10/42
54/27 - 10/42 is 37/21.
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,
54/27 = 54 × 14/27 × 14 = 756/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
10/42 = 10 × 9/42 × 9 = 90/378 - Subtract the two like fractions:
756/378 - 90/378 = 756 - 90/378 = 666/378 - After reducing the fraction, the answer is 37/21
- In mixed form: 116/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/27-20/42 54/27-10/84 54/27-30/42 54/81-10/42 54/27-50/42 54/27-70/42