Question

8-[2-(5-8)]


9-[-6-(-6-9)]

Answer 1

Olá.

(A) 8-[2-(5-8)].

$8-[2-(5-8)]$

$8-[2-3]$

$8-[-1]$

$8 + 1$

$\boxed{\boxed{= 9}}$

(B) 9-[-6-(-6-9)].

$9-[-6-(-6-9)]$

$9-[-6-(-15)]$

$9-[-6+15]$

$9-[+9]$

$9-9$

$\boxed{\boxed{=0}}$

Espero ter ajudado, bons estudos!