Answer
8 - (9$\times$r)
Work Step by Step
8 minus the product of 9 and r
Replace the word "minus" with a subtraction sign.
8 - the product of 9 and r
"product" means multiply, but this problem says to multiply only 9 and r. Therefore, you should put this section in parenthesis.
8 - (9$\times$r)