Question

Solve −2x − 15 = 6x + 9.

Answer 1

x=-3

Explanation:

−2x - 15 = 6x + 9

ok, so let's make a separation

terms with x in the left, and terms without in the right

-2x-6x=9+15

when a term gets a new side, he gets a different sign

6x was in the right side, and because he had to change it, now he is -6x

-8x=24 / : 8

let's divide everything with 8

-x=3

and because we are looking for x, not -x

the answer is x=-3

Answer 2

Answer:
`x=-3`

Explanation:

Given the following equation:

`-2x - 15 = 6x + 9`

You need to follow these steps:

- Add
`2x` to both sides of the equation:

`-2x - 15+2x= 6x + 9+2x`

`- 15 = 8x +9`

- Subtract 9 from both sides of the equation:

`- 15-9 = 8x +9-9`

`-24 = 8x`

- Divide both sides of the equation by 8. Then:

`(-24)/(8)=(8x)/(8)\\\\x=-3`