Subtract 42/48 from 7/84
7/84 - 42/48 is -19/24.
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,
7/84 = 7 × 4/84 × 4 = 28/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336 - Subtract the two like fractions:
28/336 - 294/336 = 28 - 294/336 = -266/336 - After reducing the fraction, the answer is -19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-42/48 7/84-84/48 7/84-42/96 21/84-42/48 35/84-42/48 49/84-42/48