Write and solve a linear equation from a short verbal or contextual situation.
Check whether the final word-problem answer matches the question
Problem
The equation \(x~+~7~=~18\) gives \(x~=~11~\text{stickers}\) initially. A student concludes, “Mia has \(18~\text{stickers}\) initially.” Is the conclusion correct? If not, what is the corrected answer?
Big Picture
What this problem is really about
Separate the two moments in the story before judging the conclusion: x is the initial amount, while eighteen is the total after seven stickers are added. Solving identifies the value attached to x, but the final response must also preserve that meaning and its units. Check the timeline by adding the change back to the initial amount.
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