Network -- RC network with sources

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anand raj
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Homework Statement


The current Ix and Vx in the below circuit are

DERST_zps8dcf3fdd.jpg

The Attempt at a Solution


Volt at node A= V.
Applying KCL at node A,
V/5+ ((V-20) /10) -7=0,
3V =90,
V=30.
 
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Please show your working for calculating the voltage at node A.