SOLUTION: substition to solve system: y=2x-7= what is x and -5x+4y=-13 what is y

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Question 947483: substition to solve system: y=2x-7= what is x and -5x+4y=-13 what is y
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: We know that y=2x-7, so we can replace 'y' with 2x-7 in the second equation

to go from this -5x+4y=-13 to this -5x+4(2x-7)=-13