emileecarey13
emileecarey13
13-03-2017
Mathematics
contestada
9^3x-7=9^5-x what is the answer
Respuesta :
Аноним
Аноним
13-03-2017
we can take the 9's out and get
3x-7=5-x
4x=12
x=3
Answer Link
apologiabiology
apologiabiology
13-03-2017
ok, so if [tex]a^m=a^n[/tex] where a=a, then assume that m=n
so
[tex]9^{3x-7}=9^{5-x}[/tex], 9=9, so 3x-7=5-x
3x-7=5-x
add x to both sides
4x-7=5
add 7 to both sides
4x=12
divide both sides by 4
x=3
Answer Link
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