Subtract 72/56 from 9/28
1st number: 9/28, 2nd number: 1 16/56
9/28 - 72/56 is -27/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
9/28 = 9 × 2/28 × 2 = 18/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
72/56 = 72 × 1/56 × 1 = 72/56 - Subtract the two like fractions:
18/56 - 72/56 = 18 - 72/56 = -54/56 - After reducing the fraction, the answer is -27/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-72/56 9/56-72/56 27/28-72/56 9/84-72/56 45/28-72/56 63/28-72/56