## anonymous one year ago -6x+5y=-2 10x+5y=30 Elimination

1. anonymous

Steps Only Needed

2. pooja195

10 (-6x+5y=-2) 6 (10x+5y=3) Distribute I did this because we need to get the x's to cancel so this way a postive and a negative value of the same number will cancel out x

3. pooja195

|dw:1439781385417:dw|

4. anonymous

ok

5. pooja195

|dw:1439781428541:dw|

6. anonymous

I Dont Do The Steps Thats Why I Need Them

7. pooja195

These are the steps im not giving you the answers.

8. anonymous

Oh Ok

9. pooja195

$\Huge~\rm~ \begin{bmatrix}-6x+5y=-2 \\10x+5y=30\end{bmatrix}$ $\Huge~\rm~\begin{bmatrix}-30x+25y=-10 \\30x+15y=90\end{bmatrix}$

10. pooja195

^thats what you get after you distribute

11. pooja195

The x's cancel out $\Huge~\rm~\begin{bmatrix}25y=-10 \\15y=90\end{bmatrix}$

12. pooja195

add the numbers 25+15= ? -10+90=?

13. anonymous

40

14. anonymous

and

15. anonymous

80

16. pooja195

40y=80 We need to divide both sides because we want to isolate x 40/40=1 therefore y =1 so just y whats 80/40?

17. anonymous

2

18. pooja195

Therefore y=2 Now all we do is plug in 2 in place of y that into the equation 1 $\huge~\rm~\mathrm30x+25(2) =-10$

19. anonymous

CORRECT.