High School Math : How to solve two-step equations with integers in pre-algebra

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Example Question #81 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  when 

Possible Answers:

Correct answer:

Explanation:

To solve for , first divide both sides of the equation by :

Take the square root of both sides of the equation:

However, remember that  is also equal to , so the answer is both positive and negative .

Example Question #81 : How To Solve Two Step Equations With Integers In Pre Algebra

What is if ?

 

 

Possible Answers:

Correct answer:

Explanation:

Plugging in  for gives .

=

=

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