Respostas

2013-04-17T14:59:40-03:00

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

28+{13-[6-5+2]-1}

28+{13-3-1}

28+9

38

 

53-{20-[30-(15-1+6)+2]}

53-{20-[30-20+2]}

53-{20-12}

53-8

45

 

{42+[(45-19)-(18-3)+1]-(28-15)-1}

{42+[16-15+1]-13-1}

{42+2-14}

{44-14}

30

 

62-{16-[7-(6-4)+1]}

62-{16-[7-2+1]}

62-{16-6}

62-10

52

 

20-{8+[3+(8-5)-1+6}

20-{8+[3+3-1+6}

20-{8+11}

20-19

1

 

15+{25-[2-(8-6)]+2}

15+{25-[2-2]+2}

15+{25-0+2}

15+27

42

 

56-[3+(8-2)+(51-10)-(7-2)]

56-[3+6+41-5]

56-45

11

1 1 1