Answers

Add 5/84 and 3/80

5/84 + 3/80 is 163/1680.

Steps for adding 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,
   5/84 = 5 × 20/84 × 20 = 100/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   3/80 = 3 × 21/80 × 21 = 63/1680
4. Add the two like fractions:
   100/1680 + 63/1680 = 100 + 63/1680 = 163/1680
5. So, 5/84 + 3/80 = 163/1680

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