Answers

Add 90/72 and 45/64

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

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

Steps for adding fractions

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

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