SOLUTION: x-2y+10=0 and 5x+4y+8=0 I need the steps for solving by substitution

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Question 402721: x-2y+10=0 and 5x+4y+8=0
I need the steps for solving by substitution
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x-2y+10=0
5x+4y+8=0
I need the steps for solving by substitution
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Solve the 1st Eq. for "x":
x = 2y-10
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Substitute into the 2nd Eq. and solve for "y":
5(2y-10)+4y+8 = 0
10y-50+4y+8 = 0
14y = 42
y = 3
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Solve for "x":
x = 2y-10
x = 2(3)-10
x = -4
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Cheers,
Stan H.