Question

(ITE-SP) Se (foto), então x é igual a?​

Answer 1

$1-\frac{1}{1-x}=\frac{1}{1-x}$

$1=\frac{1}{1-x}+\frac{1}{1-x}$

$1=\frac{2}{1-x}$

$1-x=2$

$-x=2-1$

$-x=1$

$x=-1$