Problem 123 of 7
Write a proof-style explanation for solving the system 3x + y = 11, x - y = 1 by elimination.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
state each transformation and why it preserves solutions.
Hidden until you reveal it.
System must be solvable by two- or three-step elimination with exact solution.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. State the equation combination used for elimination.
2. Solve the resulting one-variable equation.
3. Back-substitute and state the ordered-pair solution.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Final answer without explaining transformations.