Answers

Add 90/7 and 36/81

1^st number: 12 6/7, 2^nd number: 36/81

90/7 + 36/81 is 838/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   90/7 = 90 × 81/7 × 81 = 7290/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   36/81 = 36 × 7/81 × 7 = 252/567
4. Add the two like fractions:
   7290/567 + 252/567 = 7290 + 252/567 = 7542/567
5. 7542/567 simplified gives 838/63
6. So, 90/7 + 36/81 = 838/63
   In mixed form: 1319/63

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