## anonymous one year ago x-2y=13 9x-9y=36

1. pooja195

Is there a specific question ?

2. anonymous

yes it says. Find the solution of this system of equations

3. pooja195

Oh ok :) do you know what the first step would be?

4. anonymous

No, I never got how to do these :( I feel stupid lol

5. pooja195

aww :( okie let me help are you familiar with the elimination method?

6. anonymous

Yes I am.

7. pooja195

ok so what would we multiply x-2y=13 by to cancel out the x ? HINT: Opposite numbers will cancel out.

8. pooja195

$\huge~\rm~?(x-2y=13)$ whats the opposite of 9?

9. anonymous

-9

10. pooja195

Good! :) $\huge~\rm~-9(x-2y=13)$ can you distribute the -9 to EVERYTHING in the parentheses please? :)

11. anonymous

yes hang on

12. anonymous

-9+18-117? lol is this right? I havent did these in a long time

13. pooja195

No we need to multiply -9*x=? -9*-2=? -9*13=?

14. anonymous

-9 18 -117/ i did that

15. pooja195

$\huge~\rm~-9x+18y=-117$ $\huge~\rm~~~~~~~9x-9y=36$ do you see anything that can cancel?

16. anonymous

there all positives?

17. anonymous

oh ok