Question

resolva as expressoes numericas :

a)12+[8-(12:2)]

b)30:{11-[16-(2×5)]}

c){80-[(16:2+4)]}+6

Answer 1

a) 12+[8-(12:2)]
     12+[8-6]
    12+2=14

b) 30:{11-[16-(2×5)]}
    30:{11-[16-10]}
    30:{11-6}
    30:5=6

c)  {80-[(16:2+4)]}+6
     {80-(8+4)+6      80-12+6=74