(1)

Step 1:

Find the Thevinins equivalent resistance.

1.Open the load resistor.

2.Open Current Sources and Short Voltage Sources.

3.Calculate the Open Circuit Resistance. The resultant open circuit resistance is the thevenin Resistance (R_TH).

Redraw the circuit :

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The Resistors $\"\"$ and $\"\"$ are in parallel.

$\"\"$

$\"\"$ .

The Resistors $\"\"$ and $\"\"$ are in parallel.

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$\"\"$ .

Above resistor is in series with $\"\"$

$\"\"$

Above resultant is in series with resistance $\"\"$ .

\ Equivalent reistance is

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