The key to solving simple algebraic equations containing a single unknown (e.g. x + 6 = 10) is to realize that the equation is an equality. As long as you do the same mathematical operation (e.g. add a constant, subtract a constant, multiply by a constant, and divide by a constant) to both sides of the equation, the equality is still an equality. This includes squaring both sides of the equation or taking the square root of both sides of the equation.
Fundamental Laws:
Example 1: 
To solve for x,
 
Example 2: 
To solve for x,
 
Example 3: 
To solve for x,
 
Example 4: 
To solve for x,
 
Example 5: 
This problem could be
very complicated and become a quadratic equation. However, if you

QUIZ: Solve for x.
Question 1  Question 2  Question 3  Question 4 