BlueGhirahim
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Select the best possible first step to solving the system by first eliminating the x variable.
4x + 9y = 21
3x āˆ’ 8y = 1

A. Multiply the first equation by 3, and multiply the second equation by 4.
B. Multiply the first equation by āˆ’3, and multiply the second equation by āˆ’4.
C. Multiply the first equation by 8, and multiply the second equation by 9.
D. None of the above

(The answer isn't A, since I took the test and got it wrong)

Respuesta :

None of the above. You need to multiply one equation by -3 and one by 4

Answer:

D. None of the above

Step-by-step explanation:

The best possible first step to solving the system by first eliminating the x variable would be either to multiply the first equation by 3 and the second by -4 or to multiply the first equation by -3 and the second by 4.

Since none of those answers aren't there, the answer is D. None of the above

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