Subtract 54/42 from 42/14
1st number: 3 0/14, 2nd number: 1 12/42
42/14 - 54/42 is 12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
42/14 = 42 × 3/14 × 3 = 126/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
54/42 = 54 × 1/42 × 1 = 54/42 - Subtract the two like fractions:
126/42 - 54/42 = 126 - 54/42 = 72/42 - After reducing the fraction, the answer is 12/7
- In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14-54/42 42/28-54/42 42/14-54/84 42/70-54/42 42/98-54/42