4x-2y=-2 3x+y=-4
substitution or elimination to solve

Question

4x-2y=-2 3x+y=-4
substitution or elimination to solve

anonymous · Answer

You can solve for y in the second equation and then substitute into the first one
to solve for x

anonymous · Answer

elimination of x or y

anonymous · Answer

$$y = -4-3x$$ then substitute in the first equation for y

anonymous · Answer

$$4x-2(-4-3x)=-2$$

anonymous · Answer

.

anonymous · Answer

then distribute $$4x+8+6x=-2$$

then combine like terms $$10x+8=-2$$

anonymous · Answer

solve for x $$10x=-10$$

$$x=-1$$

anonymous · Answer

Plug that value into one of your equations and you get $$y = -1$$

anonymous · Answer

mul eq1 by 3 and mul eq2 by 4 then subtract (eq1 -eq2)

anonymous · Answer

That works also

anonymous · Answer

ok Thank you! I'm going to do one on my own to see if I completely understand..

anonymous · Answer

y=2x-7 x+4y=-1
my answer is (3,-1)

anonymous · Answer

Not sure those values are correct try plugging them into the second equation

anonymous · Answer

ok, yes it went in. Thank you

anonymous · Answer

oh you are right so sorry

anonymous · Answer

my mistake very good!

anonymous · Answer

I just hope I remeber when it comes to finals this week! UGH! night thank you