Answers

Add 81/25 and 70/45

1^st number: 3 6/25, 2^nd number: 1 25/45

81/25 + 70/45 is 1079/225.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 45 is 225
   
   Next, find the equivalent fraction of both fractional numbers with denominator 225
2. For the 1st fraction, since 25 × 9 = 225,
   81/25 = 81 × 9/25 × 9 = 729/225
3. Likewise, for the 2nd fraction, since 45 × 5 = 225,
   70/45 = 70 × 5/45 × 5 = 350/225
4. Add the two like fractions:
   729/225 + 350/225 = 729 + 350/225 = 1079/225
5. So, 81/25 + 70/45 = 1079/225
   In mixed form: 4179/225

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