Subtract 54/56 from 18/12
1st number: 1 6/12, 2nd number: 54/56
18/12 - 54/56 is 15/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
18/12 = 18 × 14/12 × 14 = 252/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Subtract the two like fractions:
252/168 - 162/168 = 252 - 162/168 = 90/168 - After reducing the fraction, the answer is 15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-54/56 18/24-54/56 54/12-54/56 18/36-54/56 90/12-54/56 18/60-54/56 18/84-54/56