Find the sum:

(5x + 2) + (4x + 5)

9x+7 I think

Step-by-step explanation:

you can't combine exponents with numbers so you have to add the exponents and do the same thing to the numbers

9x + 7

Step-by-step explanation:

5x + 4x = 9x

2 + 5 = 7

Therefore, the answer is 9x + 7.

Check:

Plug in a number into the equation. For example,:

(5 (2) + 2) + (4 (2) + 5) = (10+2) + (8+5) = 12 + 13 = 25

Plug in the same number into 9x+7 to see if you get the same number.

9 (2) + 7 = 18 + 7 = 25