Answers

Subtract 30/70 from 16/84

16/84 - 30/70 is -5/21.

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,
   16/84 = 16 × 5/84 × 5 = 80/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   30/70 = 30 × 6/70 × 6 = 180/420
4. Subtract the two like fractions:
   80/420 - 180/420 = 80 - 180/420 = -100/420
5. After reducing the fraction, the answer is -5/21

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