To eliminate the x terms and solve for y in the fewest steps, by which constants should the equations be multiplied by before adding the equations together?



First equation:

Second equation:

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 7 and the second equation by -6.
The first equation should be multiplied by 7 and the second equation by 6.