Subtract 9/49 from 12/81
12/81 - 9/49 is -47/1323.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
12/81 = 12 × 49/81 × 49 = 588/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
9/49 = 9 × 81/49 × 81 = 729/3969 - Subtract the two like fractions:
588/3969 - 729/3969 = 588 - 729/3969 = -141/3969 - After reducing the fraction, the answer is -47/1323
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