Solving for the currrents in the resistors

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I don't asnwer what to do with the wires crossing

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kni6468 said:
I don't asnwer what to do with the wires crossing

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It looks like the resistors do not cross at the center. Normally a joining point would have a shaded circle on it, but this isn't used elsewhere in the circuit, so it probably wasn't used at the center either.

So, I would take it that the 4 resistors join at the center and do not cross over.

Looks like a lot of simultaneous equations.