Question
Asked Apr 20, 2019
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5.3_7 Can you please help with a step by step guide? Thank you in advance.

Use back-substitution to solve the system of linear equations.

x  −  2y  +  z  =  7
    y  +  z  =  5
        z  =  2

(x,y,z) = ( ?  )

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Expert Answer

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Step 1

Given system of linear equations is, 

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Step 2

By substituting equation (3) in equation (2), we get 

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Step 3

Now substituting y = 3 and z = 2...

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