9b + 5 = 41 ..... What value of b makes this a true number sentence?

9b + 5 = 41

subtract 5 from each side

9b + 5 - 5 = 41 - 5

9b = 36

divide both sides ( integers ) by 9

b = 4

check in original equation

9(4) + 5 = 41

36 + 5 = 41

41 = 41

checks

9b + 5 = 41
9b = 36
b = 4

9b + 5 = 41
9b = 41 - 5
9b = 36
b = 4