Combine like terms and simplify expressions while preserving structure.
Translate a term description into a simplified expression
Problem
Add \(3~\text{copies}\) of \(x\) and \(4~\text{more}~\text{copies}\) of \(x\), then subtract \(2\). Translate the operations into an expression, combine like terms, and report the simplified result.
Big Picture
What this problem is really about
Translate the description term by term: the two groups of x-copies form like variable terms, followed by a separate subtraction of two. Add the coefficients on the x-terms, but keep the negative constant distinct because it has no variable factor. Preserve the subtraction sign in the simplified result.
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