To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied? first equation: 5x – 4y = 28 second equation: 3x - 9y = 30 the first equation should be multiplied by 3 and the second equation by 5. 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. the first equation should be multiplied by 9 and the second equation by -4.