Subtract 54/8 from 42/28
1st number: 1 14/28, 2nd number: 6 6/8
42/28 - 54/8 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
42/28 = 42 × 2/28 × 2 = 84/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
54/8 = 54 × 7/8 × 7 = 378/56 - Subtract the two like fractions:
84/56 - 378/56 = 84 - 378/56 = -294/56 - After reducing the fraction, the answer is -21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-54/8 42/56-54/8 42/28-54/16 42/84-54/8 42/28-54/24 42/28-54/40 42/28-54/56