kangogauri
kangogauri
01-04-2015
Mathematics
contestada
2[tex] 3^(x+7) = 9^(x-1)[/tex]
Respuesta :
Panoyin
Panoyin
03-04-2015
3(x + 7) = 9(x - 1)
3(x) + 3(7) = 9(x) - 9(1)
3x + 21 = 9x - 9
- 3x - 3x
21 = 3x - 9
+ 9 + 9
30
=
3x
3 3
10 = x
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