Back to Solve systems of two linear equations in two variables algebraically — Problem 3 · Task Set 35

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

This short check helps your tutor see where to start. Work each problem on
your own, without a calculator. If you are not sure, give your best try —
every answer helps your tutor plan your first few sessions.

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

Work through problems with immediate feedback

Procedures

Solve the system $x + 2y = 7$ and $3x - y = 7$ using
elimination. First multiply the first equation by 3 to match the
x-coefficients, giving $3x + 6y = 21$ . Then subtract the second
equation from this result and solve for $y$ .