Answers

Add 90/16 and 45/64

1^st number: 5 10/16, 2^nd number: 45/64

90/16 + 45/64 is 405/64.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 64 is 64
   
   Next, find the equivalent fraction of both fractional numbers with denominator 64
2. For the 1st fraction, since 16 × 4 = 64,
   90/16 = 90 × 4/16 × 4 = 360/64
3. Likewise, for the 2nd fraction, since 64 × 1 = 64,
   45/64 = 45 × 1/64 × 1 = 45/64
4. Add the two like fractions:
   360/64 + 45/64 = 360 + 45/64 = 405/64
5. So, 90/16 + 45/64 = 405/64
   In mixed form: 621/64

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