Question

{(-1)+[(-6)-(-3+5)].(-1)}.{(-8)+(-5+6).(-7)}

Answer 1

Olá,

Vamos lá,

={(-1)+[(-6)-(-3+5)].(-1)}.{(-8)+(-5+6).(-7)}

={(-1)+[(-6)-(2)].(-1)}.{(-8)+(1).(-7)}

={(-1)+[-8].(-1)}.{(-8)-7)}

={-1 + 8}{-15}

= 7 - 15

= -8