Answers

Add 81/42 and 40/49

1^st number: 1 39/42, 2^nd number: 40/49

81/42 + 40/49 is 269/98.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 49 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 42 × 7 = 294,
   81/42 = 81 × 7/42 × 7 = 567/294
3. Likewise, for the 2nd fraction, since 49 × 6 = 294,
   40/49 = 40 × 6/49 × 6 = 240/294
4. Add the two like fractions:
   567/294 + 240/294 = 567 + 240/294 = 807/294
5. 807/294 simplified gives 269/98
6. So, 81/42 + 40/49 = 269/98
   In mixed form: 273/98

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