Question

Qual é o valor de (- 6 ) – ( - 4 ) + ( + 2 ) + ( - 10 ) – ( - 8 ) + ( - 9 ) ?

Answer 1

$\sf \left(-6\right)-\left(-4\right)+\left(2\right)+\left(-10\right)-\left(-8\right)+\left(-9\right)\\\\\\\sf =\left(-6\right)+4+\left(2\right)+\left(-10\right)-\left(-8\right)+\left(-9\right)\\\\\\\sf =-2+\left(2\right)+\left(-10\right)-\left(-8\right)+\left(-9\right)\\\\\\\sf =0+\left(-10\right)-\left(-8\right)+\left(-9\right)\\\\\\\sf =0-10-\left(-8\right)+\left(-9\right)\\\\\\\sf =-10-\left(-8\right)+\left(-9\right)\\\\\\\sf =-10+8+\left(-9\right)\\\\\\\sf =-2+\left(-9\right)$

$\sf =-2-9\\\\\\\to \boxed{\sf =-11}$

Answer 2

Resposta:

Ops, vamos lá

Explicação passo-a-passo:

Dados:

- ( - ) = + ou + ( + ) = +

+ ( - ) = - ou  - ( + ) = -

Aplicação:

S = (- 6 ) - ( - 4 ) + ( + 2 ) + ( - 10 ) – ( - 8 ) + ( - 9 )

S = - 6 + 4 + 2 - 10 + 8 - 9

S = 14 - 25

S = - 11