Answers

Add 6/42 and 8/80

6/42 + 8/80 is 17/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 42 × 40 = 1680,
   6/42 = 6 × 40/42 × 40 = 240/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   8/80 = 8 × 21/80 × 21 = 168/1680
4. Add the two like fractions:
   240/1680 + 168/1680 = 240 + 168/1680 = 408/1680
5. 408/1680 simplified gives 17/70
6. So, 6/42 + 8/80 = 17/70

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