Answers

Add 18/81 and 90/64

1^st number: 18/81, 2^nd number: 1 26/64

18/81 + 90/64 is 469/288.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 64 is 5184
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5184
2. For the 1st fraction, since 81 × 64 = 5184,
   18/81 = 18 × 64/81 × 64 = 1152/5184
3. Likewise, for the 2nd fraction, since 64 × 81 = 5184,
   90/64 = 90 × 81/64 × 81 = 7290/5184
4. Add the two like fractions:
   1152/5184 + 7290/5184 = 1152 + 7290/5184 = 8442/5184
5. 8442/5184 simplified gives 469/288
6. So, 18/81 + 90/64 = 469/288
   In mixed form: 1181/288

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