Tolong jawan nomor 5 yang a, b, dan c Tolong hari senin mau dikumpulkan

5a)
6n = 34
n = 34/6
n = 5 4/6
n = 5 2/3

b)
-4n - 5 = 23
-4n = 23 + 5
-4n = 28
n = 28/-4
n = -7

c)
21 = 3n + 9
3n = 21 - 9
3n = 12
n = 12/3
n = 4