Question

X - y = 3 x + 2y = -6 Giving out brainliest SHOW ALL OF YOUR WORK☺

Answer 1

X - y = 3 >> x = 3 + y
substituting this x in the second equation gives us
3 + y + 2y = -6 >> 3y = -9 >> y = -3
substituting this value of y in x = 3 + y gives us:
x = 3 + (-3) = 3 - 3 = 0

so the solution is: y = -3 and x = 0

Answer 2

$x-y=3$
$x+2y=-6$

Subtract both equations to isolate and solve for y.

$(x-x)+(-y-2y)=3-(-6)$
$0+-3y=9$
$y=-3$

Now, solve for x in either equation by plugging in the y value.
I will choose the simpler first equation: $x-y=3$

$x+3=3$
$x=0 ; y=-3$