Solve for Req with T to Delta Transform

[zr95]

Homework Statement

Find Req in the given circuit

Homework Equations

Series: req = r1+r2...
parallel: 1/req = 1/r1 + 1/r2 ...

The Attempt at a Solution

Without redrawing the circuit I do:
12||60 = 10
10+20 = 30
30 || 30 = 15
15+10 = 25
25||25 = 12.5
12.5+15+5 = 32.5 = Req
This is the correct answer.

However if I redrew the T to a delta I no longer can get the right answer.
108 || 0 = 0
(36 || 30) || (180 || 10) = 6
6||25...
and so on

Where am I going wrong in my logic? Am I not allowed to do this sort of transformation on this problem?

 

[The Buttered Cat]

(36 || 30) || (180 || 10) = 6

Why is the 180 in parallel with the 10?

 

[zr95]

I completely looked over the 25 ohm resistor when I did that. Thanks.