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I have two problems that I need help with :( can anyone help me with these two problems?

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- Jun 29th 2011, 10:49 AMkashmoneyrecordRow reduction Help
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I have two problems that I need help with :( can anyone help me with these two problems? - Jun 29th 2011, 07:01 PMAlso sprach ZarathustraRe: Row reduction Help

For $\displaystyle 3$, solve $\displaystyle x\begin{Bmatrix}0\\ 1\\ 2\\ 4\end{Bmatrix}+y\begin{Bmatrix}2\\ 0\\ -1\\ 1\end{Bmatrix}=\begin{Bmatrix}a\\ b\\ c\\ d\end{Bmatrix}$

For $\displaystyle 4$, solve the system of equations:

$\displaystyle \left\{\begin{matrix}-x+0y+3z=0\\ 0x+y+z=1\\ -x+y+kz=k\end{matrix}\right$.