SOLUTION: What is the solution set of: x - 4y = 8 y = -5x + 7 Thank you!

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Question 970254: What is the solution set of:
x - 4y = 8
y = -5x + 7
Thank you!
Answer by thesvw(77) About Me  (Show Source):
You can put this solution on YOUR website!
x - 4y = 8
y = -5x + 7
Substitute y to the first equation.
x -4(-5x+7) =8
x +20x -28 =8
21x = 36
x= 36/21
Substitute this x value to second equation to find the y value.