Mathematics, 18.06.2021 03:00 evy22

To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before adding the equations together?
First Equation:
5x - 4y = 28
Second equation: 3x - 9y = 30
O The first equation should be multiplied by 3 and the second equation by 5.
O. The first equation should be multiplied by 3 and the second equation by -5.
© The first equation should be multiplied by 9 and the second equation by 4.
O The first equation should be multiplied by 9 and the second equation by -4.

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