Question

what is the solution to the system of equations?
$\begin{cases} x+y=-2 \\ y=x+4 end{cases}$
(make sure you put parenthesis around your two numbers in the format of (x, y))

Explanation:

Step1: Substitute $y=x+4$ into first equation

$x + (x + 4) = -2$

Step2: Simplify and solve for $x$

$2x + 4 = -2$
$2x = -2 - 4$
$2x = -6$
$x = \frac{-6}{2} = -3$

Step3: Substitute $x=-3$ into $y=x+4$

$y = -3 + 4 = 1$

Answer:

$(-3, 1)$