I have got an assignment headed "Rules of Order" in which there are a few thing I am not sure about, so this is what I have done.

Problem:- 15-12÷3X2=

I assume the rules of BIMDAS apply so I did this:- 15-12÷6=

Then 15-2= 13.

Next problem:- 50-5-10X2=

so I did this:- 50-5-20=

then:- 45-20=25

Am I on the right track here?

Thanks.