You sell a smartphone that was originally priced at $600 but is now on sale for 20% off. You give loyalty customer an additional
2 answers:
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<h3>Answer: x = 11</h3>
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Work Shown:
Those are the two possible solutions . We need to check each possible solution.
Plug in x = 11 then simplify. If we get the same number on both sides, then x = 11 is confirmed.
We get 11 on both sides, so the solution x = 11 is confirmed.
Repeat for x = 6 as well
We do not get the same thing on both sides, so x = 6 is not a solution. We consider this extraneous.