Question

How do you solve `12= - r - 5r`?

Answer 1

`r=-2`

Explanation:

First we begin by simplifying the right side. Notice how `-r` and `-5r` are actually like terms with `-r` having a `-1` as a coefficient. And so, we can combine these two terms:

`12=-color(blue)1r-5r`

`12=-6r`

Now we can solve for `r` by dividing both sides by `-6`

`12/color(red)(-6)=cancel(-6)/cancelcolor(red)(-6)r`

`-2=r`

Answer 2

`r=-2`

Explanation:

`12 = -r-5r`
`12 = -6r`
Flip the equation
`-6r = 12`
Divide both sides by `-6`
`(-6r)/(-6)=12/(-6)`
`r = -2`

Answer 3

`r=-2`

Explanation:

`(-r-5r)=12`
`-(r+5r)=12`
`(r+5r)=-12`
`6r=-12`
`r=-12/6`
`r=-2`