I believe it's B.
If I'm wrong tell me so I can see what I did wrong.
Hey there :)
Before translating the sentence into mathematics, let r represent 'a number'
5 times a number = 5r
2 times that number = 2r
The difference between them = 5r - 2r
* Your equation
5r - 2r
* Solving the equation
= 5r - 2r
= 3r
I would honestly say either b or d but I'm not completely sure most likely b
What's the numbers to the problem or else you can't solve it