Subtract 5/8 from 63/42
1st number: 1 21/42, 2nd number: 5/8
63/42 - 5/8 is 7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
63/42 = 63 × 4/42 × 4 = 252/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
5/8 = 5 × 21/8 × 21 = 105/168 - Subtract the two like fractions:
252/168 - 105/168 = 252 - 105/168 = 147/168 - After reducing the fraction, the answer is 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-10/8 63/84-5/8 63/42-5/16 63/42-15/8 63/42-5/24 63/42-25/8 63/42-5/40 63/42-35/8 63/42-5/56