Question

How do you solve `3abs(3-5r)-3=18`?

Answer 1

Youmay start by dividing evrything by `3`

Explanation:

`->|3-5r|-1=6` and add `1`
`->|3-5r|=7`

Now there are two possibilities:
(1)
`3-5r>=0` this is when `r<=3//5`:
`->3-5r=7->-5r=4->r=-4//5`

(2)
`3-5r<=0` this is when `r>=3//5`:
The signs between the bars 'flip':
`->-3+5r=7->5r=10->r=+2`
graph{|3-5x| [-6.38, 13.62, -0.64, 9.36]}