SOLUTION: Help please. 1. Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. x + 7y = -2 3x + y = 34

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Question 245385: Help please.
1. Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
x + 7y = -2
3x + y = 34

2. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-4x + 9y = 20
-2x - 2y = 10

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
2.
From 2,


Substitute into eq. 1,




From eq. 1,




(12,-2)
.
.
.


Multiply eq. 2 by -2 and add to eq. 1



From eq. 2,



(-5,0)

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