This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Solve linear equations in one variable
Prompt focus: Solve for x in the equation 3x + 7 = 22.
Why the correct answer works
x equals 5
Correct. Subtracting 7 from both sides gives 3x equal to 15, and dividing by 3 gives x equal to 5.
Why the tempting wrong answer fails
Incorrect. Substituting 6 gives 25, not 22.
Plain-language takeaway
To solve a linear equation, isolate the variable by performing inverse operations on both sides of the equation.
Simple analogy
Think of solve linear equations in one variable like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.