Subtract 27/28 from 63/72
63/72 - 27/28 is -5/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
63/72 = 63 × 7/72 × 7 = 441/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
27/28 = 27 × 18/28 × 18 = 486/504 - Subtract the two like fractions:
441/504 - 486/504 = 441 - 486/504 = -45/504 - After reducing the fraction, the answer is -5/56
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