Another way is to put it in word form
Answer:
x=-21
Step-by-step explanation:
The equation would be as follows:
x/7=-3
We work backwards by multiplying 7 by -3.
7*-3=-21
x=-21
-hope it helps
Answer:

Step-by-step explanation:

The first one -8-13-18
calculate it
Answer:
As far down/low as you can go.
Step-by-step explanation:
Usually used with upper and lower bounds it means that the "greatest decrease" you can go is 4.5 for example.
If that is what you meant then hope this helps :)