Subtract 63/42 from 27/8
1st number: 3 3/8, 2nd number: 1 21/42
27/8 - 63/42 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
27/8 = 27 × 21/8 × 21 = 567/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
63/42 = 63 × 4/42 × 4 = 252/168 - Subtract the two like fractions:
567/168 - 252/168 = 567 - 252/168 = 315/168 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8-63/42 27/16-63/42 27/8-63/84 81/8-63/42 27/24-63/42 27/40-63/42 27/56-63/42