Rolo9198
Rolo9198
21-03-2017
Mathematics
contestada
how do you solve this equation 3^3x-7=81^12-3x
Respuesta :
irspow
irspow
24-03-2017
I think you meant...
3^(3x-7)=81^(12-3x) (note that 81=3^4) so
3^(3x-7)=3^4^(12-3x)
3^(3x-7)=3^(48-12x) taking log or natural log of both sides show that
3x-7=48-12x
15x=55
x=11/3
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