Question

What is the answer to 18=6-2r

Answer 1

-6 is the answer. Subtract 6 from both sides. 12=-2r, divide by -2 on each side. -6= R

Answer 2

`r=-6`

Explanation:

First, we need to subtract 6 from each side, so that we can begin to isolate r.

`18=6-2r\\\\12=-2r`

Next, we can divide each side by -2

`12=-2r\\\\(12)/(-2) =(-2r)/(-2) \\\\-6=r`