Answers

Add 45/90 and 72/15

1^st number: 45/90, 2^nd number: 4 12/15

45/90 + 72/15 is 53/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 15 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   45/90 = 45 × 1/90 × 1 = 45/90
3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
   72/15 = 72 × 6/15 × 6 = 432/90
4. Add the two like fractions:
   45/90 + 432/90 = 45 + 432/90 = 477/90
5. 477/90 simplified gives 53/10
6. So, 45/90 + 72/15 = 53/10
   In mixed form: 53/10

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