SOLUTION: Solve the system by addition or substitution. 3x + 6y = 0 x = 2/3

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Question 110799: Solve the system by addition or substitution.
3x + 6y = 0
x = 2/3

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

Start with the given system





Plug in into the first equation. In other words, replace each with . Notice we've eliminated the variables. So we now have a simple equation with one unknown.


Multiply


Subtract 6 from both sides


Combine like terms on the right side


Divide both sides by 6 to isolate y



Reduce


So our answer is ,

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