Note:
Solve for x in the following equation.
Example 3:
Either or
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Step 1:
Step 2:
The answers are and .
Step 3:
Since the left side of the original equation after we substituted the value -
0.3 for, the solution x = -0.3 is valid.
Check the solution x = by substituting 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.
Since the left side of the original equation after we substituted the value
for, the solution is valid.
You can also check your answer by graphing (the left side of the original equation minus the right side
of the original equation). You will note that the two x-intercepts on the
graph are located at x = -0.3 and
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If you would like to test yourself by working some
problems similar to this example, click on Problem.
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