Back to Solve systems of two linear equations in two variables algebraically — Problem 4 · Task Set 35

8.EE.C.8.b Tutor Intake -- Solving Systems Algebraically

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Grade 8·8 problems·~9 min·Common Core Math - Grade 8·standard·8-ee-c-8b

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Procedures

A student solves the system $2x + 3y = 12$ and $2x - y = 4$ and
finds $y = 2$ . They stop there and report " $y = 2$ " as the final
answer. Substitute $y = 2$ into $2x - y = 4$ and find the value
of $x$ that completes the ordered-pair solution.