Subtract 28/63 from 25/72
25/72 - 28/63 is -7/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
25/72 = 25 × 7/72 × 7 = 175/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504 - Subtract the two like fractions:
175/504 - 224/504 = 175 - 224/504 = -49/504 - After reducing the fraction, the answer is -7/72
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