2.7 module 2 post-test

in the equation $2x+3=43$, the solution is $x=23$

true
false

Question

2.7 module 2 post-test

in the equation $2x+3=43$, the solution is $x=23$

true
false

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Solving Multi-Step Equations" ], "new_concepts": [], "current_concepts": [ "Solving Multi-Step Equations", "Linear Equations" ] } ## Isolate the variable term Using the *Solving Multi-Step Equations* knowledge point $$ \begin{aligned} 2x + 3 &= 43 \ 2x &= 43 - 3 \ 2x &= 40 \end{aligned} $$ ## Solve for x Using the *Solving Multi-Step Equations* knowledge point $$ \begin{aligned} x &= \frac{40}{2} \ x &= 20 \end{aligned} $$ ## Compare with the given statement Using the *Solving Multi-Step Equations* knowledge point $$ \begin{aligned} &\text{Calculated solution: } x = 20 \ &\text{Stated solution: } x = 23 \ &20 eq 23 \end{aligned} $$

True

False

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Solving Multi-Step Equations" ] }

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QUESTION IMAGE

Question

Explanation:

Isolate the variable term

Solve for x

Compare with the given statement

Answer: