Question

Помогите решить уравнение!!!
$3^{x-1} - 3^{x} + 3^{x+1} =63$

Answer 1

3 ^ ( х - 1 ) - 3 ^ х + 3 ^ ( х + 1 ) = 63
3 ^ х * ( ( 1/3 ) - 1 + 3 ) = 63
3 ^ х * ( 1/3 + 2 ) =63
3 ^ х = 63 : ( 7/3 )
3 ^ х = 27
3 ^ х = 3 ^ 3
Х = 3