Hello there, and thank you for posting your question here on brainly.
Let's put it into equation first, then we'll start solving.
6 / 2 * (1 + 2) = ?
Do parentheses first ALWAYS.
6 / 2 * (1 + 2) ==> 6 / 2 * 3
Now the division.
6 / 2 * 3 ==> 3 * 3
Finally, solve the simple multiplication.
3 * 3 = 9
9 is your final answer.
Hope this helped!! ☺♥