What is the solution to the system of equations?
2x + y = -3
x - 2y= -4

Question

What is the solution to the system of equations?
 2x + y = -3
 x - 2y=  -4

tkhunny · Answer

Have you considered solving it?

Personally, I would multiply the first equation by 2 and see if anything magical occurs.

anonymous · Answer

i just dont get the math

tkhunny · Answer

That is false.  You get lots of math.  Now, multiply everything in that first equation by 2 and we can talk.

anonymous · Answer

We can start by eliminating y, or at list representing it with it's relative value to x.

Just shift around the equation 2x+y=-3
y=3-2x
There, now we have y
And we can just put it into the second equation.
x-2(3-2x)=-4
Now just solve this one. :)

anonymous · Answer

if x-2(3-2x)=-4 is a little confusing, you can simplify it down to 5x-6=-4
This can easily be re-arranged to find x.