Subtract 63/16 from 42/12
1st number: 3 6/12, 2nd number: 3 15/16
42/12 - 63/16 is -7/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
42/12 = 42 × 4/12 × 4 = 168/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
63/16 = 63 × 3/16 × 3 = 189/48 - Subtract the two like fractions:
168/48 - 189/48 = 168 - 189/48 = -21/48 - After reducing the fraction, the answer is -7/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-63/16 42/24-63/16 42/12-63/32 42/36-63/16 42/12-63/48 42/60-63/16 42/12-63/80 42/84-63/16