Answers

Subtract 35/84 from 8/21

8/21 - 35/84 is -1/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   8/21 = 8 × 4/21 × 4 = 32/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   35/84 = 35 × 1/84 × 1 = 35/84
4. Subtract the two like fractions:
   32/84 - 35/84 = 32 - 35/84 = -3/84
5. After reducing the fraction, the answer is -1/28

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