## anonymous 5 years ago y= 7r + 4 , solve r , if y = 32 ? show your work

1. anonymous

First, plug 32 in the place of y, you get: $32=7r+4 ... (1)$

2. anonymous

Can you rewrite your equation with r in terms of y? Then just plug in the y value you are given.

3. anonymous

Now, you should try to isolate r in one side.

4. anonymous

So to get rid of the 4, subtract 4 from both sides, you get: $32-4=7r+4-4 \implies 28=7r$

5. anonymous

Now, divide both sides by 7, you get: ${28 \over 7}={7r \over 7} \implies 4=r$ So r is equal to 4.