Solve one-step equations and interpret the solution in context.
Match solutions across several one-step equations
Problem
Substitute \(x~=~4\) into \(\text{every}~\text{equation}\) below. Report the complete set of labels for the equations made true by that value.
A. \(x~+~7~=~11\) B. \(x~-~3~=~1\) C. \(5x~=~20\) D. \(x/4~=~1\) E. \(x~+~1~=~6\) F. \(x~-~8~=~-4\)
Big Picture
What this problem is really about
Use substitution as a uniform test rather than judging equations by appearance. Replace x with four in every labeled equation, evaluate each left side carefully, and compare it with the stated right side. Keep every label whose numerical statement is true, including any result involving a negative number.
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