SOLUTION: Solve the system by addition or substitution. –6x + 3y = 12 y = 2x + 3

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Question 82556: Solve the system by addition or substitution.
–6x + 3y = 12
y = 2x + 3

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Since we have y=2x%2B3 we can substitute this value of y into y of the first equation

-6x+%2B+3%282x%2B3%29+=+12 Plug in 2x+3 into y

-6x+%2B+6x+%2B+9+=+12 Distribute

9+=+12 Combine like terms

Since this is never true for any x, we have no solutions which means this system is inconsistent