Perform Multiplication: First, we need to perform the multiplication part of the expression according to the order of operations (PEMDAS/BODMAS).Calculate: 3×93×9=27
Subtract Result: Now that we have the result of the multiplication, we subtract 6 from it.Subtract: 27−627−6=21
Check for Errors: Check for any mathematical errors in the previous steps.We performed the multiplication first and then the subtraction, which is in line with the order of operations. The calculations are correct.