Alright, let's go through what these mean
- A is saying that you can group numbers in parenthesis differently for multiplication. Since this does not involve multiplication, this is not applicable.
- B is saying that you can expand numbers in parenthesis by multiplying it out.Since this does not involve multiplication, this is not applicable.
- C is saying that numbers multiplied by each other can be switched. Since this does not involve multiplication, this is not applicable.
- D is saying that you can group numbers in parenthesis differently for addition . Since this involves grouping numbers differently in parenthesis, this is correct!
Use photo math or Socratic
<h3>
Answer: 10 years old</h3>
Work Shown:
s = son's age
(father's age)/(son's age) = 9/2
45/s = 9/2
45*2 = s*9
90 = 9s
9s = 90
s = 90/9
s = 10
The son is 10 years old.
Answer:



Step-by-step explanation:



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