Subtract 18/48 from 54/42
1st number: 1 12/42, 2nd number: 18/48
54/42 - 18/48 is 51/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
54/42 = 54 × 8/42 × 8 = 432/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
18/48 = 18 × 7/48 × 7 = 126/336 - Subtract the two like fractions:
432/336 - 126/336 = 432 - 126/336 = 306/336 - After reducing the fraction, the answer is 51/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-36/48 54/84-18/48 54/42-18/96 54/42-54/48 54/42-90/48