evaluate (3x - 1), when x = 6

(3x-1) , x=6

(3*6 -1)

18 -1

17//

that is the answer

We just have to replace "x" with 6.

So instead of (3x - 1)

We have: (3(6) - 1)

3 * 6 = 18, so (18 - 1)

And our final answer is 17.