anonymous
  • anonymous
Solve. 3^x-5 = 9 also how do i find what is x?
Mathematics
katieb
  • katieb
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ParthKohli
  • ParthKohli
Equate the bases please. \(\Large \color{MidnightBlue}{\Rightarrow 3^{x - 5} = 3^2 }\) Equate the exponents. \(\Large \color{MidnightBlue}{\Rightarrow x - 5 = 2 }\) \(\Large \color{MidnightBlue}{\Rightarrow x = 7 }\)
anonymous
  • anonymous
why 2?
ParthKohli
  • ParthKohli
I have made an equation of the exponents.

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anonymous
  • anonymous
ohh
ParthKohli
  • ParthKohli
\(\Large \color{MidnightBlue}{\Rightarrow a^m = a^n \Rightarrow m = n }\)
anonymous
  • anonymous
7^x - 5 = 74^x + 7 so what about that one?
anonymous
  • anonymous
Wait 9+5=14 so wouldn't whatever x be have to end up at 14?

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