Question

NE 3) (5x+8) -(8x + 14)=9

Answer 1

5x+8-(8x+14)=9 (раскрываем скобки , если перед скобкой стоит минус , то знаки меняются на противоположные)
5x+8-8x-14=9 приводим подобные слагаемые
-3x=15
x=-5
Ответ : x=-5
Если помог отметь как лучшее)
Удачи!

Answer 2

To solve the equation (5x + 8) - (8x + 14) = 9, you can start by simplifying the equation and then isolating the variable x. Here are the steps:

1. Distribute the negative sign on the left side of the equation to both terms inside the parentheses:

(5x + 8) - 8x - 14 = 9

2. Combine like terms on the left side by subtracting 8x from 5x:

5x - 8x + 8 - 14 = 9

Simplify further:

-3x - 6 = 9

3. Now, add 6 to both sides of the equation to isolate the term with the variable on the left side:

-3x - 6 + 6 = 9 + 6

Simplify:

-3x = 15

4. Finally, divide both sides by -3 to solve for x:

(-3x)/(-3) = 15/(-3)

Simplify:

x = -5

So, the solution to the equation (5x + 8) - (8x + 14) = 9 is x = -5.