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Solve each system. $$ \left\{\begin{array}{r} {x+2 y-z=5} \\ {6 x+y+z=7} \\ {2 x+4 y-2 z=5} \end{array}\right. $$...

Question

Solve each system. $$ \left\{\begin{array}{r} {x+2 y-z=5} \\ {6 x+y+z=7} \\ {2 x+4 y-2 z=5} \end{array}\right. $$

Solve each system. $$ \left\{\begin{array}{r} {x+2 y-z=5} \\ {6 x+y+z=7} \\ {2 x+4 y-2 z=5} \end{array}\right. $$



Answers

Solve each system by substitution.
$\begin{array}{l}{5 x-2 y+3 z=4} \\ {-4 x+6 y-7 z=-1} \\ {3 x+2 y-z=4}\end{array}$


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