What is the answer to(5x+4)+(12x-9)

5x+4+(12-9)
5x+4+3
5x+7

add combine like terms 5x and 12x which is 17x and 4-9 which will = -5 the whole answer will =17x-5

Step-by-step explanation:

You are solving for x here. To solve for x you need to isolate it onto one side of the equation. First multiply -4 into (-6x - 3) to get 24x + 12. Now that you have a simplified equation on both sides, subtract 12 from both sides to get 24x = 0. Because anything multiplied by 0 equals 0, x = 0.