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x - 3= 0
4x - 4 y- 12=0
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SKABETIX

Bonsoir,

[tex]\begin{cases}x - 3 = 0 \\4x - 4y - 12 = 0\end{cases}[/tex]

[tex]\begin{cases}x - 3 + 3= 0 + 3\\4(x - y - 3)= 0\end{cases}[/tex]

[tex]\begin{cases}x = 3 \\x - y - 3 = 0\end{cases}[/tex]

[tex]\begin{cases}x = 3 \\3 - y - 3 = 0\end{cases}[/tex]

[tex]\begin{cases}x = 3 \\y= 0\end{cases}[/tex]