Question

What is the value of x in the solution to the following system of equations?

x - y = -3
x + 3y = 5

Answer 1

-1

Answer 2

Try to subtract both equations and see what you get for y :)

Answer 3

Then when you get y, substitute it back into the equation and find x.

Answer 4

Mutiply the first eqn by 3.
Then add the resulting eqn and the second eqn
Then solv for x.