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: Linear equations
Prompt focus: Solve for x in the equation 3x plus 7 equals 22.
Why the correct answer works
5
Correct. Subtracting 7 gives 3x equals 15, and dividing by 3 gives x equals 5.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
Isolate the variable by reversing the operations. Subtract 7 from both sides to get 3x equals 15, then divide both sides by 3 to get x equals 5.
Simple analogy
Think of linear equations 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.