Respuesta :

Answer:

[tex]r=-9[/tex]

Step-by-step explanation:

We are given the equation

[tex]7r=-63[/tex]

In order to solve for r, we must divide each side by 7

[tex]r=\frac{-63}{7}[/tex]

This then simplifies to

[tex]r=-9[/tex]

The answer is -9 you can solve this by dividing 7 to get R alone since you are solving for that variable.