The way I learned algebra back in the dark ages...
6/2*(2+1) - Inside Brackets First =
6/2*(3) - Multiplication Second =
6/6 - Division Third =
1 - Final Answer
That is the way I learned it a hundred years ago too,but now they seem to teach pe then left to right md or dm as they come then as or sa as they come, also left to right. Makes math more fun that way, everybody can be right!
I though it was P,E,MD(left to right),AS(ltr)...meaning Parenthesis, then Exponents, after that it is left to right Multiply and/or Divide, then left to right Add and/or Subtract.