Selinaviz
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Can anybody help me in calculating this inequality?

9^(x-1)+7>0

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Bituinviz
[tex]\\9^{x-1}+7>0 \\ \\\frac19*9^x>-7 \\ \\9^x>-63 \\ \\x\in R \\ \\a^x>0 \ for \ every \ real \ number \ a>0[/tex]