Seven less than a number is 15

22

Step-by-step explanation:

okay if the fact you're asking this means you don't understand the question not the math.

The question is saying the some number has a value that if 7 is subtracted from, will equal 15. So basically, x-7=15. x=15+7. x=22

The number that is seven less is eight or I can say it like this it is 8