How do you use substitution to find y=5x-19 and 5x-5y=-5?

1) you isolate a variable, meaning you get either Y or X all by itself on one side of the equation, with no other numbers or variables on that side. That is already done with "y=5x-19"

2) so you have what Y equals. Y equals 5x-19. So, in the second equation, you substitute what Y equals in for the Y. So you get "5x-5 (5x-19) = - 5"

3) you solve that problem, and end up getting "x=5"

4) then, you substitute "x=5" into the first problem, getting "y=5 (5) - 19"

5) the answer you get for that is "y=6"

6) with x=5 and y=6, you have your answer (5,6)