Question

Resolva as expressões

A) [18-(3+10:(-2)+5)]

B) 5-{+3-[(+4-(+25)+6-4)]}

C) 15-{-3+[(+1).(+1)+1]}

Answer 1

A) [18-(3+10:(-2)+5)]=
     [18-(3-5+5)]=
     [18-(3-0)]=
     [18-3]=15

B) 5-{+3-[(+4-(+25)+6-4)]}=
     5-{+3-[(+4+6-25-4)]}=
     5-{+3-[(10-29)]}=
     5-{+3-[-19]}=
     5-{+3+19}=
     5-22= -17

C)15-{-3+[(+1).(+1)+1]}=
    15-{-3+[1+1]}=
    15-{-3+2}=
    15-{-1}=
    15+1=16