Subtract 27/42 from 63/12
1st number: 5 3/12, 2nd number: 27/42
63/12 - 27/42 is 129/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
63/12 = 63 × 7/12 × 7 = 441/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
27/42 = 27 × 2/42 × 2 = 54/84 - Subtract the two like fractions:
441/84 - 54/84 = 441 - 54/84 = 387/84 - After reducing the fraction, the answer is 129/28
- In mixed form: 417/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/12-54/42 63/24-27/42 63/12-27/84 63/12-81/42 63/36-27/42 63/60-27/42 63/84-27/42