What is the solution of the following system

3x+3y=10
-9x-9y=-30

Question

What is the solution of the following system

3x+3y=10
-9x-9y=-30

anonymous · Answer

I don't need the answer I just need step by step help

kewlgeek555 · Answer

Okay, I am going to show you an example see if you can identify what I did.  And this is linear equation, right?

anonymous · Answer

use elimination method

anonymous · Answer

Yes linear

kewlgeek555 · Answer

2x + 3y = 1500
-2x	         -2x
3y = -2x + 1500$$\frac{ 3y }{ 3 }=\frac{ -2 }{ 3 }x+\frac{ 1500 }{ 3 }$$(I am dividing here)^
So your answer comes to this:
$$y=\frac{ -2 }{ 3 }x+500$$
where  -2 over 3 is the slope and 500 is the y-intercept.

anonymous · Answer

I'm so confused

kewlgeek555 · Answer

So...did you see what I did?  I started by eliminating the one to the left first.  Added it to the other side (like you would do with a regular linear equation), but since you have to subtract it I added -2x. Since 3 was being multiplied by y, I divded every number by 3, which got me to my final answer.  I am going to do yours now.  Step by step.  And then , hopefully you can do the very last step for the second one.

anonymous · Answer

Ok what if I did this 
(3x+3y=10)(-9)
(-9x-9y=-30)(3)

anonymous · Answer

|dw:1380683040201:dw understand

anonymous · Answer

What

anonymous · Answer

hold on

anonymous · Answer

6x + 2y = 0
    4x + y = -1|dw:1380683296866:dw|