plz help me im stuck and *ye*

5, 5x3=15, 1x10=10, 15-10=5

Well according the order of operations, multiplication or division (left to right), then addition or subtraction (left to right).

I am assuming you mean this:

$3*5-1*10$

We have the multiplication, you start with that.

$15 - 10$

Then we have a simple subtraction problem

$\boxed{5}$

Hope this helped!