SOLUTION: Please show me how to solve the equation by substitution: y = 4x - 5;y = 5x

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Question 309151: Please show me how to solve the equation by substitution: y = 4x - 5;y = 5x
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
You have two equations:

Eqn 1: y=4x-5
Eqn 2: y=5x

Take the y=5x from Eqn 2 and substitute it into Eqn 1 instead of y.

5x=4x-5
x=-5