Question

-1+(-2+5)+[-4+(-6+5-8)]​

Answer 1

Olá

$\tt Pergunta =>\boxed{\sf -1+\left(-2+5\right)+\left[-4+\left(-6+5-8\right)\right]}$

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Lembre das Regras de sinais =>

$\sf (+)(+) = + \\\\ \sf (-)(-) = +\\\sf (+)(-) = \\ \\ \sf (-)(+) =$

Vamos ao que interessa =>

$\sf -1+\left(-2+5\right)+\left[-4+\left(-6+5-8\right)\right]\\\\\\\sf =-1+3+\left[-4+\left(-6+5-8\right)\right]\\\\\\\sf =-1+3-13\\\\\\\boxed{\sf =-11}$

$\large \boxed{\boxed{\tt ATT: CODE ~ PEN}}$