2 + -20 ÷ 5 × -4 -1
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Answer:
17
Step-by-step explanation:
To solve the expression, you should follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right):
1. Start with multiplication and division from left to right:
-20 ÷ 5 = -4
2. Now, you have the following expression:
2 + (-4) × (-4) - 1
3. Continue with multiplication and addition/subtraction from left to right:
-4 × -4 = 16
2 + 16 - 1
4. Finally, perform addition and subtraction:
2 + 16 = 18
18 - 1 = 17
So, the final result of the expression is 17.