Subtract 75/81 from 35/49
35/49 - 75/81 is -40/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 49 × 81 = 3969,
35/49 = 35 × 81/49 × 81 = 2835/3969 - Likewise, for the 2nd fraction, since 81 × 49 = 3969,
75/81 = 75 × 49/81 × 49 = 3675/3969 - Subtract the two like fractions:
2835/3969 - 3675/3969 = 2835 - 3675/3969 = -840/3969 - After reducing the fraction, the answer is -40/189
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