Combine like terms and simplify expressions while preserving structure.
Build a simplified expression from a table
Problem
Room A has \(2x~\text{notebooks}\), Room B has \(5x~\text{notebooks}\), and the office has \(7~\text{folders}\). Add all quantities and combine like terms. Report the simplified total-items equation.
Big Picture
What this problem is really about
Translate every location into one term before combining. The two room entries share the x variable and can be combined by adding coefficients, while the office’s seven folders form a fixed constant with no x factor. Add all contributions and preserve that difference in the simplified total-items equation.
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