Question

calcule o valor da expressão

28+{13-[6-(4+1 )+2]-1}

Answer 1

28+{13-[6-(4+1)+2]-1}
28+{13-[6-5+2]-1}
28+{13-1-1}
28+11
=39

Answer 2

28+{13-[6-5+2]-1}
28+{13-[6-7]-1}
28+{13-1-1}
28+{13-2}
28+11=39