The systems of equations is: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.
An example is: (2*3+5)2+4 You would start with the parentheses, and inside you would start with 2*3 which equals 6.
After that part: (6+5)2+4 We still have parentheses, so you are now going to focus on addition inside the parentheses 6+5=11
After that part: 112+4 Now we focus on the exponents. 11*11=121
After that part: 121+4 Now, since there is no multiplication/division, we will focus on the addition. 121+4=125
After that part: 125 The final answer of (2*3+5)2+4 is 125. That is how PEMDAS(the systems of equations) works.
