SOLUTION: I am suppose to solve the systems of equations by elimination and I don't understand it. Here is my problem. It says to solve by substitution.
x-4y=22
2x+5y=-21
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Question 900834: I am suppose to solve the systems of equations by elimination and I don't understand it. Here is my problem. It says to solve by substitution.
x-4y=22
2x+5y=-21
Found 2 solutions by Jc0110, MathTherapy:
Answer by Jc0110(165) (Show Source): You can put this solution on YOUR website!
--> Equation 1
--> Equation 2 ... Substitute into Equation 3.
--> Equation 3
... Substitute into Equation 2.
Therefore, x=2 whereby y=-5.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
I am suppose to solve the systems of equations by elimination and I don't understand it. Here is my problem. It says to solve by substitution.
x-4y=22
2x+5y=-21
Which method is it: elimination, or substitution?
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