Subtract 9/12 from 42/48
42/48 - 9/12 is 1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 48 × 1 = 48,
42/48 = 42 × 1/48 × 1 = 42/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
9/12 = 9 × 4/12 × 4 = 36/48 - Subtract the two like fractions:
42/48 - 36/48 = 42 - 36/48 = 6/48 - After reducing the fraction, the answer is 1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48-9/12 42/48-18/12 42/96-9/12 42/48-9/24 42/48-27/12 42/48-9/36 42/48-45/12 42/48-9/60 42/48-63/12 42/48-9/84