Final answer:
To simplify the given expression, first perform the multiplication, then the division, and finally the addition and subtraction. The final result is 20.
Step-by-step explanation:
To simplify the expression 3 · 32 + 8 ÷ 2 − (4 + 3), we follow the order of operations (PEMDAS/BODMAS). First, we perform the multiplication: 3 · 32 = 3 · 9 = 27. Next, we perform the division: 8 ÷ 2 = 4. After that, we simplify the addition and subtraction within the parentheses: (4 + 3) = 7. Finally, we subtract 7 from the previous result: 27 - 7 = 20. Therefore, the answer is A. 20.