@austinL Solve the system of equations by elimination:
{(-0.7x+0.6y=1.3), (0.5x-0.3y=-0.3)}

Question

@austinL Solve the system of equations by elimination: 
{(-0.7x+0.6y=1.3), (0.5x-0.3y=-0.3)}

austinl · Answer

$-0.7x+0.6y=1.3$
$0.5x-0.3y=-0.3$

What I would do first is multiply the bottom equation by two.

$-0.7x+0.6y=1.3~~~~~~~~~~~~~-0.7x+0.6y=1.3$
$2(0.5x-0.3y=-0.3)\longrightarrow\underline{~~~~~~~~~x-0.6y=-0.6}$
$~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~0.3x=0.7$
$x=\dfrac{7}{3}$

Then you can plug that into one of your original equations and solve for y!

anonymous · Answer

Thanks for answering. I wasn't sure if that one even posted. My computer doesn't like this site today. I actually figured it out. I meant to stay on and explain to you what I'd already done, but my computer froze again so I just gave up for a while. I was pretty sure I had an answer for this one, I just wanted to see if someone else got the same answer =) So thank you! You're always a huge help to me.