(adsbygoogle = window.adsbygoogle || []).push({}); nodal voltage??

im not real sure on how solve circuits using the nodal method. ive got an equation for node a but i dont know how to solve it. heres the equation

(90-Va)/20 - (Vb-Va)/3 + Va/20 - Ia = 0

thats at node a. how do i solve this?

Ia = 6 A

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# Homework Help: Nodal voltage?

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