Question

29-{-3+[-5-(6-8)+(-3-1)]+[-(-6+2-16)+(-9-5)]}

Answer 1

29-{-3+[-5-(6-8)+(-3-1)]+[-(-6+2-16)+(-9-5)]}                        1) parentesis
29-{-3+[-5-( - 2)+(- 4)]+[-(-20)+(-4)]}
29-{-3+[-5 + 2 - 4]+[ + 20 - 4]}                                          2) corchetes
29-{-3+[- 7]+[ + 16]}
29-{-3 - 7 + 16}                                                              3) llaves
29 + 3 +  7 - 16
23

espero que te sirva, salu2!!!!!