42- (13-b),якщо b=6,8,9,4

Question

42- (13-b),якщо b=6,8,9,4

Answer 1

42 - (13 - b) = 42 - 13 + b = 29 + b             42 - (13 - b)

29 + 6 = 35                                                  42 - (13 - 6) = 42 - 7 = 35

29 + 8 = 37                                                  42 - (13 - 8) = 42 - 5 = 37

29 + 9 = 38                                                  42 - (13 - 9) = 42 - 4 = 38

29 + 4 = 33                                                  42 - (13 - 4) = 42 - 9 = 33