Subtract 15/12 from 42/16
1st number: 2 10/16, 2nd number: 1 3/12
42/16 - 15/12 is 11/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 16 × 3 = 48,
42/16 = 42 × 3/16 × 3 = 126/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
15/12 = 15 × 4/12 × 4 = 60/48 - Subtract the two like fractions:
126/48 - 60/48 = 126 - 60/48 = 66/48 - After reducing the fraction, the answer is 11/8
- In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-15/12 42/16-30/12 42/32-15/12 42/16-15/24 42/16-45/12 42/48-15/12 42/16-15/36 42/16-75/12 42/80-15/12 42/16-15/60 42/16-15/84