Question

find x (3/8 power3)×(3/8powerx)=1

Answer 1

${ (\frac{3}{8}) }^{3} \times { (\frac{3}{8}) }^{x} = 1 = { (\frac{3}{8} }^{3}) = \frac{1}{ { (\frac{3}{8}) }^{x} }$
now
( 3/8)^3=(8/3)^x
(3/8)^3=(3/8)^-x
= 3= -x
x=-3