Solve the Expression: 12:4-3+3×3 Using Order of Operations

Question

$12:4-3+3\times3=$

00:00 Multiplication and division come before addition and subtraction, so we'll start with them

00:13 Let's first solve the exercises we marked

00:23 Addition and subtraction are at the same level, so we solve from left to right

00:28 Let's solve the exercise we marked

00:31 We're left with a simple subtraction exercise

00:34 And that's the solution!

According to the order of operations, we place the multiplication and division exercise in parentheses:

$(12:4)-3+(3\times3)=$

We solve the exercises in parentheses:

$12:4=3$

$3\times3=9$

And we obtain the exercise:

$3-3+9=$

According to the order of operations, we solve the exercise from left to right:

$3-3=0$

$0+9=9$