Question

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Answer 1

hey here is your answer

hope it helps

if we connect first 4 ohm and 12 ohm resistant in paraller

then the equivalent will be 3ohm( u can find it by 1/R=1/R1+1/R2)

and then 3ohm and 2ohm will be connected in series

so equivalent will be 3+2=5ohm (by formula R=R1+R2)

see attachment for the figure