Hello, there!
5g - 30 = -40
We can solve this by working backwards.
First, let's isolate the g.
We will do this by adding 30 to each side.
5g - 30 = -40
+ 30 + 30
5g = 10
Finally, we will divide each side by 5 to get our final answer

Our final answer is 2.
g = 2
16 - 7m = 30
We will use the same process as we did for the last question
Let's subtract 16 from each side to isolate the m
16 - 7m = 30
-16 -16
-7m = 14
Now, let's multiply each side by -1 to make m a positive number.
-7m = 14
* -1 *-1
Now, we have 7m = -14
We will now divide each side eby 7 to get our final answer.

Our final answer is -2
m = -2
I hope I helped!
Let me know if you need anything else!
~ Zoe