Question

[-20/(4+1)]-{10-[10-(5-4+9)]/[-1-2*(-2+1)]}

Answer 1

Olá,

Vamos lá,

=[-20/(4+1)]- {10-[10-(5-4+9)]/[-1-2*(-2+1)]}
=[-20/5]      - {10-[10-(10)]/[-1-2*(-1)]}
=-4 -  {10-[0]/[-1-2*(-1)]}
=-4 -  {10- 0}
=-4 -10
= -14