Subtract 54/72 from 15/28
15/28 - 54/72 is -3/14.
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,
15/28 = 15 × 18/28 × 18 = 270/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Subtract the two like fractions:
270/504 - 378/504 = 270 - 378/504 = -108/504 - After reducing the fraction, the answer is -3/14
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