Subtract 81/84 from 6/56
6/56 - 81/84 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
6/56 = 6 × 3/56 × 3 = 18/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
81/84 = 81 × 2/84 × 2 = 162/168 - Subtract the two like fractions:
18/168 - 162/168 = 18 - 162/168 = -144/168 - After reducing the fraction, the answer is -6/7
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