Answers

Subtract 15/81 from 7/35

7/35 - 15/81 is 2/135.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 35 × 81 = 2835,
   7/35 = 7 × 81/35 × 81 = 567/2835
3. Likewise, for the 2nd fraction, since 81 × 35 = 2835,
   15/81 = 15 × 35/81 × 35 = 525/2835
4. Subtract the two like fractions:
   567/2835 - 525/2835 = 567 - 525/2835 = 42/2835
5. After reducing the fraction, the answer is 2/135

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