Question

How do you solve `8r + 6r + 15= - 69`?

Answer 1

See a solution process below:

Explanation:

First, combine like terms on the left side of the equation:

`(8 + 6)r + 15 = -69`

`14r + 15 = -69`

Next, subtract `color(red)(15)` from each side of the equation to isolate the `r` term while keeping the equation balanced:

`14r + 15 - color(red)(15) = -69 - color(red)(15)`

`14r + 0 = -84`

`14r = -84`

Now, divide each side of the equation by `color(red)(14)` to solve for `r` while keeping the equation balanced:

`(14r)/color(red)(14) = -84/color(red)(14)`

`(color(red)(cancel(color(black)(14)))r)/cancel(color(red)(14)) = -6`

`r = -6`

Answer 2

`r = -6`

Explanation:

`8r + 6r + 15 = -69`

First, let's combine "like-terms":
`14r + 15 = -69`

Then we subtract `15` from both sides of the equation to make `14r` by itself:
`14r = -84`

Finally, we divide both sides by `14` in order to get the final answer:
`r = -6`

If you need more help with these problems, feel free to watch this video:

Hope this helps!