Question: 1. (06.01) Select the best possible first step to solving the system by first eliminating the x variable. 4x + 9y = 21 3x -

1. (06.01) Select the best possible first step to solving the system by first eliminating the x variable. 4x + 9y = 21 3x - By = 1 (1 point) Multiply the first equation by 3, and multiply the second equation by 4. Multiply the first equation by -3, and multiply the second equation by -4. O Multiply the first equation by 8, and multiply the second equation by 9

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