Problem 66 of 7
Compare transformations multiply the first equation by 3 and the second equation by 2 and multiply only the left side of the first equation by 3 for 2x + 3y = 12, x - y = 1. Which preserves solutions?
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
track both sides of equations through transformations.
Hidden until you reveal it.
One transformation must be valid and one must lose or alter information.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Check whether entire equations are transformed reversibly.
2. Check whether the system still has enough independent information.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Saying both are valid when one drops an equation or changes one term only.