Translate verbal phrases and short contexts into algebraic expressions.
Translate simple add-subtract phrases
Problem
Translate \(9~\text{less}~\text{than}~n\) into an algebraic expression.
Big Picture
What this problem is really about
The words “less than” reverse the spoken subtraction order. Treat n as the reference amount named after “than,” start with that quantity, and subtract nine from it. Testing a convenient value for n can confirm that the expression produces a number nine below the reference rather than the opposite difference.
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