Thevenin technique solving problem -- getting wrong answer

[sciman]

Hi

Can you tell me please what I am doing wrong here

I need to find the Vc function after we close the switch.
To do this, I calculate the Thevenin equivalent circuit.
I calculate Vth to be 21/(60+30) times 30, which makes 0.7V but why the answer is 7V?
Basically the answer is Vc=7x(... which means that final voltage of capacitor is 7V and not 0.7V.
Any idea?

thanks

 

[Delta2]

Ehm hm, 30x(21/(60+30))=7

 

[sciman]

I am embarassed