Respuesta :

Answer:

Option A. -6.5

Step-by-step explanation:

we have

[tex]6.4r-5.9r=-3.25[/tex]

Solve for r

That means ---> isolate the variable r

Combine like terns left side of the equation

[tex]0.5r=-3.25[/tex]

Divide by 0.5 both sides

[tex]0.5r/0.5=-3.25/0.5[/tex]

[tex]r=-6.5[/tex]

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