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 − 8y = 1

A. Multiply the first equation by 3, and multiply the second equation by 4.
B. Multiply the first equation by −3, and multiply the second equation by −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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