3 13 3 31 9. We need two concepts to solve this problem. The correct answer is 7 so if your calculator displays 9 as the answer it does NOT use order of operations correctly.
First we solve any operations inside of parentheses or brackets.
It will give you the step by evaluation of the order of operations it has implemented on your mathematical expression. Learn about order of operations using our free math solver with step-by-step solutions. You can follow each step to understand the process. Second we solve any exponents.