Question
Upstudy AI Solution
Tutor-Verified Answer
Answer
The result of the expression
is -20.
Solution
To evaluate the expression:
Step 1: Calculate the expression inside the parentheses
Step 2: Multiply the result by 3
Step 3: Subtract the result from 7
Final Answer:
Answered by UpStudy AI and reviewed by a Professional Tutor
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The Deep Dive
Let’s break it down! First, you solve the parentheses:
. Now your expression looks like
. Next, according to the order of operations (PEMDAS/BODMAS), you multiply before you subtract:
. Finally, subtract that from 7:
. So, the answer is
!
For a little trivia: Did you know that the order of operations helps avoid confusion when dealing with complex expressions? It’s like a set of rules for math that everyone agrees on, ensuring we all find the same answer! Imagine if everyone did their own thing – math would be chaotic!
Also, be careful with signs! A simple mistake, like forgetting a negative sign or miscalculating a multiplication, can lead to a completely wrong answer. Always double-check your processes, especially with parentheses and negative numbers – they can be sneaky!