Subtract 42/16 from 63/8
1st number: 7 7/8, 2nd number: 2 10/16
63/8 - 42/16 is 21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 8 × 2 = 16,
63/8 = 63 × 2/8 × 2 = 126/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
42/16 = 42 × 1/16 × 1 = 42/16 - Subtract the two like fractions:
126/16 - 42/16 = 126 - 42/16 = 84/16 - After reducing the fraction, the answer is 21/4
- In mixed form: 51/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8-84/16 63/16-42/16 63/8-42/32 63/24-42/16 63/8-42/48 63/40-42/16 63/8-42/80 63/56-42/16