Subtract 49/72 from 28/56, Solve 28/56

Subtract 49/72 from 28/56

28/56 - 49/72 is -13/72.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
49/72 = 49 × 7/72 × 7 = 343/504
Subtract the two like fractions:
252/504 - 343/504 = 252 - 343/504 = -91/504
After reducing the fraction, the answer is -13/72

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