Ijust need to know which expressions are equal to the given one at the top. i will award brainliest for the best and correct

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.