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Question 1

Solve the following system of equations: 

3x+2y+40 = 3z

8x-7z = 100

6x+5y= 5z -20 

Round correctly to exaclty two decimals of accuracy!

x=   , y=   ,z=  

Answer 1:

85.26

Answer 2:

-23.15

Answer 3:

83.15

Question 2

Solve the following system of equations:

3x + 2y + z = 10

x + 3y = 20

8x + 10y + 2z = 60

If you let z = 5, what will the x value be?

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