Subtract 7/16 from 63/42
1st number: 1 21/42, 2nd number: 7/16
63/42 - 7/16 is 17/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
63/42 = 63 × 8/42 × 8 = 504/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
7/16 = 7 × 21/16 × 21 = 147/336 - Subtract the two like fractions:
504/336 - 147/336 = 504 - 147/336 = 357/336 - After reducing the fraction, the answer is 17/16
- In mixed form: 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-14/16 63/84-7/16 63/42-7/32 63/42-21/16 63/42-7/48 63/42-35/16 63/42-7/80 63/42-49/16