Subtract 42/48 from 48/84
48/84 - 42/48 is -17/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 84 × 4 = 336,
48/84 = 48 × 4/84 × 4 = 192/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336 - Subtract the two like fractions:
192/336 - 294/336 = 192 - 294/336 = -102/336 - After reducing the fraction, the answer is -17/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/84-42/48 48/84-84/48 48/84-42/96