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Which step can you use to solve the equation c-7 = 13 for c?

A. Add 7 to both sides of the equation.

B. Subtract 7 from both sides of the equation.

C. Multiply both sides of the equation by 7.

D. Divide both sides of the equation by 7.​

Respuesta :

Hi there!  

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I believe your answer is:  

A. Add 7 to both sides of the equation.

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Here’s why:  

  • To solve for a variable we need to use inverse operations to 'undo' a value. We would do this on both sides for the equation to remain balance.
  • The opposite of subtraction is addition, so we would add 7 to both sides of the equation to solve for c.

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[tex]\boxed{\text{Calculating the Answer...}}\\\\c - 7 = 13\\---------\\\rightarrow c - 7 + 7 = 13 + 7\\\\\rightarrow \boxed{c=20}[/tex]

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Hope this helps you. I apologize if it’s incorrect.  

Amphitrite1040

Hey there!

Since the given equation is subtracting, we're going to do the opposite of s traction which addition; whereas addition opposite is subtraction, division is multiplication, and multiplication is division. Now that we got that information out the way, we can finally answer your question

The very first step to solving c - 7 = 13 is ADDING 7 to BOTH SIDES because it is the opposite of subtracting

Answer you're looking for: Option A. Add 7 to both sides of the equation

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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