Respuesta :

[tex]\bf 2x+3y=12~\hspace{5em}(\stackrel{x}{\phantom{X}},\stackrel{y}{8})~\hspace{5em}2x+3(\stackrel{\stackrel{y}{\downarrow }}{8})=12 \\\\\\ 2x+24=12\implies 2x=-12\implies x=\cfrac{-12}{2}\implies x=-6[/tex]

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