Question

What is the solution to the following system of equations?

4x + 2y = 12
x − y = 3

(3, 0)
(0, 3)
(0, −3)
(2, 3)

Answer 1

Notice how you have 2y in the first equation and -y in the second equation

You can therefore multiply the second equation by 2 to get -2y in the second equation

From there, you can add both equations, eliminating y, and solve for x. Once you have x, you can plug x into either equation and solve for y.