 SOLVING LINEAR EQUATIONS. Recall the following:

• A linear equation is a polynomial of degree 1.

• In order to solve for the unknown variable, you must isolate the variable.

• In the order of operations, multiplication and division are completed before addition and subtraction.

LINEAR EQUATION - Solve for x in the following equation.

Example 1: Add 4 to both sides of the equation: Divide both sides by 2: The answer is x = 7.

Check the solution by substituting 7 in the original equation for x. If the left side of the equation equals the right side of the equation after the substitution, you have found the correct answer.

• 2(7) - 4 = 14 - 4 = 10.

If you would like to work another example, click on Example.

If you would like to test yourself by working some problems similar to this example, click on Problem. [Algebra] [Trigonometry]
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