Answer:

B. 9x + 7

Step-by-step explanation:

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

= 5x + 2 + 4x + 5

= 5x + 4x + 2 + 5

= 9x + 7

Answer:

B. 9x + 7

Step-by-step explanation:

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

5x + 4x + 2 + 5 (Arrange and add the like terms)

9x + 2 + 5 (Add the like terms)

9x + 7 (Already simplified)