Question

a) 13+8-[1-(-15+3-12)+8]-[(12-4):8]

b)36-{14+[-57-(-33-49+30)]}

c)-5+{-4-[5-6+(3-4)]+6}​

Answer 1

BOM DIA meu querido

a)=21−[1−(−12−12)+8]−[(8):8]=  

=21−[1−(−24)+8]−[1]=

=21−[25+8]−[1]=

=21−[33]−[1]=

=−12−[1]=

=−13

b) =36−{14+[−57−(−82+30)]}=  

=36−{14+[−57−(−52)]}=

=36−{14+[−5]}=

=36−{9}=

=27