Answers

Subtract 9/80 from 2/84

2/84 - 9/80 is -149/1680.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 84 × 20 = 1680,
   2/84 = 2 × 20/84 × 20 = 40/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   9/80 = 9 × 21/80 × 21 = 189/1680
4. Subtract the two like fractions:
   40/1680 - 189/1680 = 40 - 189/1680 = -149/1680

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