Help with math! please.?

Question

i need to put parentheses in this problem to make the answer equal 1.

the problem is this:

6+9/3-2

Answer 1

If you can switch the plus and minus:

(6 - 9)/3 + 2 = 1

I don't see any other way

(6 + 9)/(3-2) = 15

(6 + 9)/3 - 2 = 3

6 + (9/3) - 2 = 7