learning objective Solves first-degree linear equations in one unknown.
What is the value of x in the equation 2x + 3 = 11?
options — each distractor captures a typical conceptual error
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x = 8 Distractor
error it captures Subtracts correctly (11 − 3 = 8) but forgets to divide by 2.
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x = 7 Distractor
error it captures Adds the 3 instead of moving it as a subtraction: (11 + 3)/2 = 7.
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x = 4 Key
why it is the answer Isolates step by step: 2x = 8, then x = 4.
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x = 5.5 Distractor
error it captures Divides 11 by 2 and ignores the +3 term entirely.
1 key · 3 distractors · aligned with official guidelines
AI drafts the item the teacher validates and publishes