Subtract 7/56 from 8/81
8/81 - 7/56 is -17/648.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
8/81 = 8 × 56/81 × 56 = 448/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
7/56 = 7 × 81/56 × 81 = 567/4536 - Subtract the two like fractions:
448/4536 - 567/4536 = 448 - 567/4536 = -119/4536 - After reducing the fraction, the answer is -17/648
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