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Answer
The final answer is 21.
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The Deep Dive
To solve
, we need to follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).
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First, handle the division:
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Next, handle the multiplication:
Now substitute these values back into the expression:
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Perform the addition:
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Finally, perform the subtraction:
Therefore, the result is
.