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gmany
[tex]-ax+2b \ \textgreater \ 8\ \ \ |\text{change the signs}\\\\ax-2b \ \textless \ -8\ \ \ \ |+2b\\\\ax \ \textless \ 2b-8\ \ \ |:a\\\\\text{if}\ a \ \textless \ 0\ \text{then}\ x \ \textgreater \ \dfrac{2b-8}{a}\\\\\text{if}\ a \ \textgreater \ 0\ \text{then}\ x \ \textless \ \dfrac{2b-8}{a}[/tex]

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