Subtract 72/81 from 9/35
9/35 - 72/81 is -199/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
9/35 = 9 × 81/35 × 81 = 729/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
72/81 = 72 × 35/81 × 35 = 2520/2835 - Subtract the two like fractions:
729/2835 - 2520/2835 = 729 - 2520/2835 = -1791/2835 - After reducing the fraction, the answer is -199/315
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