Subtract 7/35 from 7/81
7/81 - 7/35 is -46/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 35 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 81 × 35 = 2835,
7/81 = 7 × 35/81 × 35 = 245/2835 - Likewise, for the 2nd fraction, since 35 × 81 = 2835,
7/35 = 7 × 81/35 × 81 = 567/2835 - Subtract the two like fractions:
245/2835 - 567/2835 = 245 - 567/2835 = -322/2835 - After reducing the fraction, the answer is -46/405
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