Question

Explain why the following statements are equivalent: x + (y + 9) = (x + y) + 9

Answer 1

Answer:

There are no like terms hence they stay the same

Step-by-step explanation:

x + (y + 9)

There are no like terms

=x+y+9

(x + y) + 9

There are no like terms

=x+y+9

Answer 2

Answer:get into it

Step-by-Stefan: