Answers

Subtract 15/70 from 8/81

8/81 - 15/70 is -131/1134.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 70 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 81 × 70 = 5670,
   8/81 = 8 × 70/81 × 70 = 560/5670
3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
   15/70 = 15 × 81/70 × 81 = 1215/5670
4. Subtract the two like fractions:
   560/5670 - 1215/5670 = 560 - 1215/5670 = -655/5670
5. After reducing the fraction, the answer is -131/1134

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