Solve Systems Algebraically — Substitution and Elimination

Substitution — solve one equation for a variable, plug into the other. Elimination — add/subtract equations to cancel a variable.

Algebra 1Common Core HSA-REI.C.6A-REIVerified correct ✓

Worked examples

Solve the system: x + 3y = 8; 3x + y = 8
Answer: {"x": "2", "y": "2"}

Solve the system: x - 3y = 8; -2x - y = 12
Answer: {"x": "-4", "y": "-4"}

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