Subtract 9/56 from 9/72
9/72 - 9/56 is -1/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
9/72 = 9 × 7/72 × 7 = 63/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
9/56 = 9 × 9/56 × 9 = 81/504 - Subtract the two like fractions:
63/504 - 81/504 = 63 - 81/504 = -18/504 - After reducing the fraction, the answer is -1/28
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