Answer
$x=0.9$
Work Step by Step
Remember that $10^{\log x}=x$ (Inverse Property)
$\log(1-x)=-1$
$10^{\log(1-x)}=10^{-1}$
$1-x=\frac{1}{10}=0.1$
$1-0.1=x$
$x=0.9$
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