Subtract 5/42 from 54/56
54/56 - 5/42 is 71/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
5/42 = 5 × 4/42 × 4 = 20/168 - Subtract the two like fractions:
162/168 - 20/168 = 162 - 20/168 = 142/168 - After reducing the fraction, the answer is 71/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56-10/42 54/56-5/84 54/56-15/42 54/56-25/42 54/56-35/42