Answers

Subtract 35/80 from 20/84

20/84 - 35/80 is -67/336.

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,
   20/84 = 20 × 20/84 × 20 = 400/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   35/80 = 35 × 21/80 × 21 = 735/1680
4. Subtract the two like fractions:
   400/1680 - 735/1680 = 400 - 735/1680 = -335/1680
5. After reducing the fraction, the answer is -67/336

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