Subtract 10/4 from 27/42
1st number: 27/42, 2nd number: 2 2/4
27/42 - 10/4 is -13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
27/42 = 27 × 2/42 × 2 = 54/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
10/4 = 10 × 21/4 × 21 = 210/84 - Subtract the two like fractions:
54/84 - 210/84 = 54 - 210/84 = -156/84 - After reducing the fraction, the answer is -13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-10/4 27/42-20/4 27/84-10/4 27/42-10/8 81/42-10/4 27/42-30/4 27/42-10/12 27/42-50/4 27/42-10/20 27/42-70/4 27/42-10/28