Problem 112 of 7
Justify the elimination step for the standard-form system -5x + 2y = 10, 5x + y = 5, preserving negative signs.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
preserve signs while forming linear combinations.
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System must include negative coefficients whose signs affect cancellation.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Line up like terms.
2. Add or subtract coefficients including their signs.
3. Show which variable cancels and what equation remains.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Sign errors in coefficients or constants.