Question

O Valor de 8+{18-[42-(13+2-7)]}

Answer 1

Resposta:

-8

Explicação passo-a-passo:

8+{18-[42-(13+2-7)]}=> 8+{18-[42-(15-7)]}=> 8+{18-[42-(+8))]} =>8+{18-[42-8]} =.

8+{18-[34]} =>  8+{18-34} => 8+{-16}=> 8 - 16 => -8