Answers

Add 45/64 and 90/72

1^st number: 45/64, 2^nd number: 1 18/72

45/64 + 90/72 is 125/64.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 72 is 576
   
   Next, find the equivalent fraction of both fractional numbers with denominator 576
2. For the 1st fraction, since 64 × 9 = 576,
   45/64 = 45 × 9/64 × 9 = 405/576
3. Likewise, for the 2nd fraction, since 72 × 8 = 576,
   90/72 = 90 × 8/72 × 8 = 720/576
4. Add the two like fractions:
   405/576 + 720/576 = 405 + 720/576 = 1125/576
5. 1125/576 simplified gives 125/64
6. So, 45/64 + 90/72 = 125/64
   In mixed form: 161/64

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