Question

x - y = 10
2x + y = 2
Can you show your work so I know what I did wrong?

Answer 1

You need to get each variable on separate sides

Answer 2

What did you get as an answer?

Answer 3

I got 4, -5. But my sister said it was wrong.

Answer 4

do you have your work? We can possibly see what you did wrong. :)
the answer is wrong, but it doesnt seem too far off

Answer 5

No I erased it all.

Answer 6

hmm... okay
well, we can solve this with a few techniques. I think its set up nicely for elimination (there's a y and a -y which will cancel), so we can just add the equations together.

Answer 7

Can you show me how you would do it?

Answer 8

its not a great notation, but i think you can see what's going on -- adding together the terms on each side to eliminate a variable