The translation of the sum a and n is a+n
Answer:

Explanation:
Let's begin writing down everything
(X×(-11)+5)×(-9)+X-55
Now we can multiply
-9(-11X+5)+X-55
99X-45+X-55
And so we get
100X-100
Factorize 100
100(x-1)
The diver will make 12 stops before reaching the surface.
Answer:
First step, add 11 to 44.
Step-by-step explanation:
After that, divide both sides by negative 3.