Determinar si los siguientes sistemas son indeterminados. \( \begin{array}{ll}\text { a) }\left\{\begin{array}{c}3 x-2 y=1 \\ -6 x+4 y\end{array}=-2\right. & \text { b) }\left\{\begin{array}{l}x-y=2 \\ x+y=4\end{array}\right.\end{array} \)

Варнант 3 1. Выполните действия \( \begin{array}{ll}\frac{2 x+8}{6 x-12}+\frac{6-2 x}{4 x-8} & \frac{2 x+8}{4 x-12}-\frac{2 x-2}{x-3} \\ \frac{52 x^{9}}{102 y^{7}} \cdot \frac{68 y^{5}}{78 x^{6}} & \frac{64 a^{7}}{45 y^{10}}: \frac{6 a^{5}}{135 y^{6}}\end{array} \)

\( \frac{x}{a-b+c}=\frac{y}{b-c+a}=\frac{z}{c-a+b} \) Demons trates That \( \frac{x+y}{a}=\frac{y+z}{b} \)

2. Solve for \( x \) in the equation : \( ^{\log _{3}(5 x+2)-} \) \( \log _{3}(x-2)=2 \)

\( \frac{x}{a-b+c}=\frac{y}{b-c+a}=\frac{z}{c-a+b} \) Demons trates That \( \frac{x+y}{a}=\frac{y+z}{b} \)

What is the solution of \( \frac{x}{3} \geq 6 \) ?