Respuesta :

Answer:

[tex]-\frac{20}{3}[/tex]

Step-by-step explanation:

[tex]R=9x+8y\\\\4=9x+8(8)\\\\9x+8(8)=4\\\\9x+64=4\\\\9x+64-64=4-64\\\\9x=-60\\\\\frac{9x=-60}{9} \\\\x=-\frac{60}{9}=\boxed{-\frac{20}{3}}[/tex]

Hope this helps.

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