Answer:

Step-by-step explanation:
In order to solve this, we are trying to find the value of
. Basically,
is a placeholder for a number that is unknown. Some number minus 3 is equal to 21.
Our goal is to find
. To do this we want to isolate
on one side of the equation

Let's add 3 to both sides.

Hope this helped!
Answer:
what's the question explain pls and I'll answer
Answer:
at 6:06
Step-by-step explanation:
since it took 13 to be half full just add an extra 13 minutes. 5:53+ 13 minutes= 6:06