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PLZ PLZ HELP ASAP

Consider the given inequality and its solution. In which step, if any, is there an error?
I attached a screenshot of the question, inequality, & answer choices

Plz help me out <3

PLZ PLZ HELP ASAP Consider the given inequality and its solution. In which step, if-example-1
User GRafoKI
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1 Answer

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Step 3 is wrong. It should've came out to: 3≥21x

User Kaykay
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