Subtract 25/4 from 54/42
1st number: 1 12/42, 2nd number: 6 1/4
54/42 - 25/4 is -139/28.
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,
54/42 = 54 × 2/42 × 2 = 108/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
25/4 = 25 × 21/4 × 21 = 525/84 - Subtract the two like fractions:
108/84 - 525/84 = 108 - 525/84 = -417/84 - After reducing the fraction, the answer is -139/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-50/4 54/84-25/4 54/42-25/8 54/42-75/4 54/42-25/12 54/42-25/20 54/42-25/28