Answers

Add 81/40 and 70/4

1^st number: 2 1/40, 2^nd number: 17 2/4

81/40 + 70/4 is 781/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 4 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 40 × 1 = 40,
   81/40 = 81 × 1/40 × 1 = 81/40
3. Likewise, for the 2nd fraction, since 4 × 10 = 40,
   70/4 = 70 × 10/4 × 10 = 700/40
4. Add the two like fractions:
   81/40 + 700/40 = 81 + 700/40 = 781/40
5. So, 81/40 + 70/4 = 781/40
   In mixed form: 1921/40

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