Algebra
The inverse of -9n is dividing by -9.

Answer:
55
Step-by-step explanation:
its subtracting 15 each time
22 = z + (-9) Switch the sides
z = 22 - (-9) Solve
z = 31 So, z = 31
what about using 20-30-40-5
Step-by-step explanation:
the sequence is that you are skipping ten to get the second nb which is 30 and keep on going on to get 50