Question

a, -1-{-2-[-5+(15-3)]} =


b, (-2-3)-{4+[-8-(-9+2)]} =


c, 6-(-9+1)-{(-3+4)+[-(-5+1)+(-8+10)]} =


d, -(-2)+(-3)-{-2+[-1-(-2+1)]+5} =


g, 20-{-10-[-8+(5-12)]-20} =

Answer 1

Resposta:

A) -1 {-2[ -5+(15-3)]}=

-1 { -2[ -5+(12)]}=

-1 { -7 +(12)}=

-1 { 5}= 4

B)( -2-3)-{4+[ -8( -9+2)]}=

( -5) -{4+[ -8( -7)]}=

( -5) - ( -11 )=6

C) 6-(-9+1)-{(-3+4)+[-(-5+1)+( -8+10)]}=

6-( -8) -{( 1 ) +[-( -4) +(2)]}=

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

6-(-8) -{ 7 }=

14 - { 7 }=7