Question

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

x − y = −3
x + 3y = 5

Answer 1

let y=x+3 from the first equation. then substitute that into the second so you'll have this equation in one variable:
\[\large x+3(x+3)=5 \]

Answer 2

so what should it equal out to

Answer 3

what did you get?

Answer 4

1?