Mathematics III: PEMDAS

[Foucaulf]

This is third consecutive math post made by the OP in which the question was ill-defined. And this is a problem - these questions do not elucidate, but only confuse. The more this happens, the more people tend to believe math is some chaotic black art of sorts when what matters is that there is a logical process that makes the answer(s) true.

Maybe the OP should read Pólya; it's a classic book, I think.