Question

Find the choice below which gives a first step in solving the given system of equations by the addition method.


2x - 3y = 7

x - 4y = 2


Multiply the first equation by 3 and the second by 4.
Multiply the first equation by -4 and the second by -2.
Multiply the second equation by -2.
Multiply the first equation by 4.

Answer 1

Hello if you multiply the second equation by -2 you get

-2x + 8y = -4 so you can add it to the 1st equation

2x + 3y = 7 and you eliminate "x"

Answer 2

thanx