SOLUTION: Use algebraic substitution to solve the following systems of equations -2x+3y+5z=-21 -4z=20 6x-3y=0

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Question 1098510: Use algebraic substitution to solve the following systems of equations
-2x+3y+5z=-21
-4z=20
6x-3y=0
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
equations
-2x+3y+5z=-21
-4z=20
6x-3y=0
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Step 1, Solve for z