Question

Given the system of equations, what is the solution?

2x + y = -1
x - y = -5

Answer 1

@d3Xter

Answer 2

Given:

\(\begin{align}2x + y = -1 \\x - y = -5 \end{align}\)

Add both eqns :

\(3x = -6 \longrightarrow x = \frac{-6}{3} = -2\)

Answer 3

Subst \(x = -2 \) in 2nd eqn to get y \(\Longrightarrow \begin{align}-2 -y = -5 \\ -y = 2-5 \\y=3\end{align}\)

Answer 4

{(-8, -3)}

{(2, 7)}

{(-2, 3)}