I have asked this question before. I have 2 calculators and one gives the answer of 2 the other answer is -13.
I was told to use PEMDAS, so I tried this and got a different answer shown below.
P none
E none
M 3*6=18
D none
A 18+2=20
S 3-20= -17
Can someone explain all this and give me the correct answer and why?