Answer:
This is what you would do!
One, you start off by multiplying 5 into the parentheses (9 and v)
Next, it will look like this,
5(9)-5(v)
Then multiply your equation
5x9=45
5xv=5v
And this is what it would look like
45-5v
(Sometimes this would just stay like this, put if your teacher wants the unknown number to be by itself, this is what you would do next)
Divide 5 to both problems
45/5 5v/5
9=v
(That last part is if you need it but hopes it helps :))
Explanation: