butty11720
butty11720
25-09-2014
Mathematics
contestada
28-9X=-12-11X
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mariamikayla
mariamikayla
25-09-2014
[tex]28-9x=-12-11x \\\\ -9x+11x=-12-28 \\\\ 2x=-40 \\\\ \boxed{x=-\frac{40}{2}=-20}[/tex]
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