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 first equation by 2.

Multiply the second equation by 2.

Multiply the first equation by –2.

Multiply the second equation by –2.

Answer 1

you want to eliminate x. so you want to have the same coefficient of x in both the equations. so you can multiply the first equation by -2 and add the resulting equation with the second equation