## Elementary Linear Algebra 7th Edition

$x$ = $\frac{1}{2}$s -$\frac{3}{2}$t -$\frac{1}{4}$
-4$x$ + 2$y$ - 6$z$ = 1 4$x$ = 2$y$ - 6$z$ - 1 $x$ = $\frac{1}{2}$$y - \frac{3}{2}$$z$ - $\frac{1}{4}$ Now add parameters for $y$ and $z$. So, $y$ = $s$, and $z$ = $t$. $x$ = $\frac{1}{2}$s -$\frac{3}{2}$t -$\frac{1}{4}$