Answers

Subtract 1/84 from 28/80

28/80 - 1/84 is 71/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 84 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 80 × 21 = 1680,
   28/80 = 28 × 21/80 × 21 = 588/1680
3. Likewise, for the 2nd fraction, since 84 × 20 = 1680,
   1/84 = 1 × 20/84 × 20 = 20/1680
4. Subtract the two like fractions:
   588/1680 - 20/1680 = 588 - 20/1680 = 568/1680
5. After reducing the fraction, the answer is 71/210

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