Question
Solve each system in terms of the arbitrary variable $x .$$$\begin{array}{r}3 x+4 y-z=13 \\x+y+2 z=15\end{array}$$
Step 1
Step 1: First, we can express the second equation in terms of $y$ and $z$ as follows: $$x = 15 - y - 2z$$ Show more…
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