Answer:
First option: Nine mutiplied by the difference of eighty-six and a number.
Step-by-step explanation:
We have the expression:
9(86−x)
We have a difference of number in parenthesis, meaning that this operation will happen first, and then its result will be multiplied by 9
So, we know that this expression means that 9 will be multiplied by something, and this something is a difference of 86 and a number (86 first, and the other number second).
Then, the correct answer would be:
Nine mutiplied by the difference of eighty-six and a number.
First option is the correct one.