SOLUTION: Why is 3x-19y , x+9y not a system of linear equation?

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Question 1004178: Why is 3x-19y , x+9y not a system of linear equation?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3x-19y does not have an equal sign, so it is not an equation.