Hi, I would like to answer you question to help you out but unfortunately there is not enough information for me to do so. Maybe if you put a picture along with those words then I could solve the problem.
For example, when stating a problem such as 2 plus?= 4
Then I am able to solve by doing...
4-2=2
Check: 2 plus 2=4
But with your problem, F is perpendicular to line m whats blank
Then the only thing I am able to do is...
F=m blank=?
Like I said I would love to help but I need a little more info than what is present now. Thanks.
The difference between 79 and 22 is 57. 79 is THE number. All you have to do is add 22 and 57 because the answer you get would ALWAYS have one of the numbers added as the difference.