3.
According to the order of operations (PEMDAS), parentheses come first. Therefore, you solve 8-4 first; your answer is 4. Then you use multiplication, so you solve 4 x 2; that gives you 8. Afterward, division has a higher priority than subtraction, so you divide 10 by 2. You terminal operation would be 8-5; your final answer is 3.
