Subtract 27/72 from 4/28
4/28 - 27/72 is -13/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
4/28 = 4 × 18/28 × 18 = 72/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Subtract the two like fractions:
72/504 - 189/504 = 72 - 189/504 = -117/504 - After reducing the fraction, the answer is -13/56
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