Answers

Add 2/42 and 9/80

2/42 + 9/80 is 269/1680.

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,
   2/42 = 2 × 40/42 × 40 = 80/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   9/80 = 9 × 21/80 × 21 = 189/1680
4. Add the two like fractions:
   80/1680 + 189/1680 = 80 + 189/1680 = 269/1680
5. So, 2/42 + 9/80 = 269/1680

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