Answers

Subtract 15/70 from 8/84

8/84 - 15/70 is -5/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   8/84 = 8 × 5/84 × 5 = 40/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   15/70 = 15 × 6/70 × 6 = 90/420
4. Subtract the two like fractions:
   40/420 - 90/420 = 40 - 90/420 = -50/420
5. After reducing the fraction, the answer is -5/42

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