Question

calcule o valor das expressões

a) -65-[-20+5-(-15+5)+40]

b)25-{-8-[3+(-6-2)+5]}

c) 16-(-3)+[-4+2-(-12+2)]

d) -33+{7+[-12-(-18+2-1)]-16}

as contas por favor

Answer 1

a) -65-[-20+5-(-15+5)+40]
    -65-[-20+5+10+40]
   -65-35= -100

b) 25-{-8-[3+(-6-2)+5]}
    25-{-8-[3-8+5]}
    25+8= 33

c) 16-(-3)+[-4+2-(-12+2)]
    16+[-4+2+10]
    16+8=24

d) -33+{7+[-12-(-18+2-1)]-16}
    -33+{7+[-12+17]-16}
    -33+{7+5-16}
    -33-4= -37