Subtract 21/81 from 10/56
10/56 - 21/81 is -61/756.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
10/56 = 10 × 81/56 × 81 = 810/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
21/81 = 21 × 56/81 × 56 = 1176/4536 - Subtract the two like fractions:
810/4536 - 1176/4536 = 810 - 1176/4536 = -366/4536 - After reducing the fraction, the answer is -61/756
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