Respuesta :

antonio9990
[tex]\text{We know: 9=2x-4 ; x=?} \\\\ 9=2x-4 \iff \boxed{2x-4=9} \\ \\ 2x-4=9\\2x=9+4\\2x=13\\ \boxed{x=6.5} \\ \\ \text{Check:} \\ 9=2*6.5-4\\9=13-4\\ \ 9=9 \ \text{true} \\\\\huge{ \text{The answer is x=6.5}}[/tex]
leumitica
9=2x-4
2x=9+4
2x=13
x=31:2
x=6,5