Question

Como resolver {30+[10-5+(-2-3)]-18-12}

Answer 1

Vejamos:
{30+[10-5+(-2-3)]-18-12}=
{30+[10-5+(-5)]-18-12}=
{30+[10-10]-18-12}=
{30+0-18-12}=
{30+0-30}=
0

Espero terajudado
Titida