Question

So if the following system of equations by substitution.

Answer 1

Step-by-step explanation:

Option B is correct.

I'm sure (-3 , 4)

Answer 2

Answer:

x=-3, y=4. (-3, 4). B)

Step-by-step explanation:

7x+2y=-13

-3x-8y=-23

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4(7x+2y)=4(-13)

-3x-8y=-23

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28x+8y=-52

-3x-8y=-23

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25x=-75

x=-75/25

x=-3

7(-3)+2y=-13

-21+2y=-13

2y=-13-(-21)

2y=-13+21

2y=8

y=8/2

y=4