Question

Select the best possible first step to solving the system by first eliminating the x variable.
x – 3y = 12
2x + 5y = 2
Multiply the second equation by 2.
Multiply the first equation by 2.
Multiply the first equation by –2.
Multiply the second equation by –2.

Answer 1

Multiply the first equation by -2. Then add to the second.

Answer 2

You should get:

11y = 14
y = 14/11,

plug Y back into one of the equations and you will get your X value.

Answer 3

x – 3y = 12
2x + 5y = 2
Multiply the first equation by –2. (and then add it to the second equation)

-2x + 6y = -24
2x + 5y = 2
on adding them we get
11y = -22
y = -22/11 = -2

substitute y = -2 in first equation

x - 3(-2) = 12
x + 6 = 12
x = 12 - 6
x = 6