\left\{ \begin{array} { l } { 6 x - 4 z = 24 } \\ { 2 x - y = 1 } \\ { - 3 y + 4 z = - 21 } \end{array} \right.
Solve for x, z, y (complex solution)
x=\frac{y+1}{2}
y\in \mathrm{C}
z=\frac{3\left(y-7\right)}{4}
Solve for x, z, y
x=\frac{y+1}{2}
y\in \mathrm{R}
z=\frac{3\left(y-7\right)}{4}
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