Answers

Add 81/42 and 2/80

1^st number: 1 39/42, 2^nd number: 2/80

81/42 + 2/80 is 547/280.

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,
   81/42 = 81 × 40/42 × 40 = 3240/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   2/80 = 2 × 21/80 × 21 = 42/1680
4. Add the two like fractions:
   3240/1680 + 42/1680 = 3240 + 42/1680 = 3282/1680
5. 3282/1680 simplified gives 547/280
6. So, 81/42 + 2/80 = 547/280
   In mixed form: 1267/280

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