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4. simplify \\(\\frac{3-4|2(-3)|}{|-3|}\\) 7 9 -9 -7

Question

  1. simplify \\(\frac{3-4|2(-3)|}{|-3|}\\)

7

9

-9

-7

Explanation:

Response

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
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],
"needs_drawing": false,
"concepts_used": [
"Order of Operations",
"Algebraic Simplification"
],
"new_concepts": [
"Absolute Value Evaluation"
],
"current_concepts": [
"Order of Operations",
"Algebraic Simplification",
"Absolute Value Evaluation"
]
}
</pre_analysis>

<reasoning>

Evaluate the absolute value expressions

Using the Order of Operations and Algebraic Simplification knowledge points
\[

$$\begin{aligned} |2(-3)| &= |-6| = 6\\ |-3| &= 3 \end{aligned}$$

\]

Substitute and simplify the numerator

Using the Order of Operations and Algebraic Simplification knowledge points
\[
3 - 4|2(-3)| = 3 - 4(6) = 3 - 24 = -21
\]

Divide the numerator by the denominator

Using the Order of Operations and Algebraic Simplification knowledge points
\[
\frac{-21}{3} = -7
\]
</reasoning>

<answer>
<mcq-option>7</mcq-option>
<mcq-option>9</mcq-option>
<mcq-option>-9</mcq-option>
<mcq-correct>-7</mcq-correct>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Absolute Value Evaluation"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Order of Operations",
"Algebraic Simplification"
],
"new_concepts": [
"Absolute Value Evaluation"
],
"current_concepts": [
"Order of Operations",
"Algebraic Simplification",
"Absolute Value Evaluation"
]
}
</pre_analysis>

<reasoning>

Evaluate the absolute value expressions

Using the Order of Operations and Algebraic Simplification knowledge points
\[

$$\begin{aligned} |2(-3)| &= |-6| = 6\\ |-3| &= 3 \end{aligned}$$

\]

Substitute and simplify the numerator

Using the Order of Operations and Algebraic Simplification knowledge points
\[
3 - 4|2(-3)| = 3 - 4(6) = 3 - 24 = -21
\]

Divide the numerator by the denominator

Using the Order of Operations and Algebraic Simplification knowledge points
\[
\frac{-21}{3} = -7
\]
</reasoning>

<answer>
<mcq-option>7</mcq-option>
<mcq-option>9</mcq-option>
<mcq-option>-9</mcq-option>
<mcq-correct>-7</mcq-correct>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Absolute Value Evaluation"
]
}
</post_analysis>