Subtract 18/42 from 1/48
1/48 - 18/42 is -137/336.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
1/48 = 1 × 7/48 × 7 = 7/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
18/42 = 18 × 8/42 × 8 = 144/336 - Subtract the two like fractions:
7/336 - 144/336 = 7 - 144/336 = -137/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/48-18/42 1/48-36/42 1/96-18/42 1/48-18/84 3/48-18/42 1/48-54/42 5/48-18/42 1/48-90/42 7/48-18/42