How do you do this:

1/2(3�ã3)(18)

sorry, do not understand

It is square root symbol

1/2 * 3sqrt3 * 18

27 sqrt 3

check my thinking.

so

(1/2) (3 sqrt 3) (18)?

= (3*18 * sqrt 3)/2

= 27 sqrt 3

To solve the expression 1/2(3÷3)(18), follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division [from left to right], Addition and Subtraction [from left to right]).

1/2(3÷3)(18)

First, simplify the expression within the parentheses:
3 ÷ 3 = 1

Now substitute the value of 1 into the expression:
1/2(1)(18)

Next, perform the multiplication:
1/2 * 1 * 18

Multiply 1 and 18:
1/2 * 18 = 9

The final answer to 1/2(3÷3)(18) is 9.