Question

Preciso do cálculo..​

Answer 1

$1-(x+b)=\frac{1}{2}(x-2b)$

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

$2(1-x-b)=x-2b$

$2-2x-2b=x-2b$

$-2x-x=-2b+2b-2$

$-3x=-2$

$3x=2$

$x=\frac{2}{3}$

Gabarito: A