How Do You Calculate Equivalent Resistance in Mixed Circuit Configurations?

[huskydc]

How can you separate the series and parallel in this combination?? I'm confused... the question asks for equivalent resistance


I thought it's somelike like this:

1/R eq = 1/2R(1) + 1/R(1) + 1/R(2)

but it's wrong...help?

 

[Just some guy]

I can't see the picture, but for resistors in parallel 1/(total resistance) = sum of(1/induvidual resistances)