attention rectangle Make sure you write all of this down! What is 21 - 6? 15 reminder Anything inside the parentheses is always treated as a single number. 10 x (7 - 2) = 50 68 reminder Multiplication and division must be done before addition and subtraction. prompt 700 50 375 34 0 Pause the video and write these rules down in your study guide. Which part of the problem do we solve first? 3 - 1 5 + 4 1 + 6 3 - 1 What will we do next? Multiply by 4 Solve 2 + 6 Divide by 4 Solve 2 + 6 What is our answer? 13 9.25