A number increased by 5

8 subtraced from a number

A number divided by 9

3 less than five times a number

A number multiplied by 12 is 84

7 less than n is 22

8 times a number x is 72


A number divided by 3 is 18

Are you asking us to answer these number questions. This looks like a simple homework questions.

I will answer 1, you do the rest!

1) A number increased by 5. x + 5

Yes, you can put any letter or symbol you wish to represent the 'number'. For example, donf used 'x'. You may also use 'a' or 'y' or anything you like, but not a number!