Question

What is a possible first step in eliminating a variable in the following system of equations?

x + y = 3
3x – 4y = 23

Answer 1

Multiply the first equation by –4. /
Choices 1 and 2. /
Multiply the first equation by 3. /
None of the above.

Answer 2

from what you have written down , none of the above

Answer 3

The best choice would be to multiply the first equation by 4. Then you would have 4y in the first equation and the second equation has -4y. So if you added the two equations together, the y would be eliminated.

Answer 4

So it is none of the above? because that's what makes senese?