Respuesta :

Answer:

the answer is c

Step-by-step explanation:

charliethebest2002

Answer:

  • [tex]\boxed{\sf{r=18}}[/tex]

Step-by-step explanation:

To solve the equation, isolate the variable from one side of the equation.

-22=-40+r

First, switch sides.

[tex]\Rightarrow: \sf{-40+r=-22}[/tex]

Then, you add by 40 from both sides.

[tex]\Longrightarrow: \sf{-40+r+40=-22+40}[/tex]

Solve.

Add or subtract the numbers from left to right.

[tex]\Longrightarrow: \sf{-22+40=18}[/tex]

[tex]\Longrightarrow: \boxed{\sf{r=18}}[/tex]

  • Therefore, the correct answer is C. "r=18".

I hope this helps! Let me know if you have any questions.

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