## anonymous one year ago 2x-3y=-11 6x-3y=21 Solve By Elimination

1. anonymous

2. LynFran

what do u think shd be the 1st step?

3. anonymous

|dw:1439778117077:dw|

4. anonymous

|dw:1439778207305:dw|

5. LynFran

ok we can subtract the two equation... by doing that we eliminate the y variable.. agree?

6. anonymous

yes

7. LynFran

so|dw:1439785508765:dw|

8. LynFran

whats 2x-6x=? whats -11-21=?

9. anonymous

Umm 4,1

10. LynFran

2x-6x= -4x

11. LynFran

-11-21=-32

12. anonymous

ok

13. LynFran

|dw:1439785783672:dw|

14. LynFran

now whats the next step?..

15. anonymous

divide 4x

16. LynFran

no we divide by -4 both side of the equation... so we will have x to one side of the equation when we do that

17. LynFran

|dw:1439785937311:dw|

18. anonymous

8

19. LynFran

correct whats the next step?

20. LynFran

|dw:1439786123881:dw|

21. LynFran

so we now that x=8 ...how can we find what y= to... do u know?

22. anonymous

Subtract 8 From The Equation

23. LynFran

no we substitute the value of x into any 1 of the given equation...

24. anonymous

OMG This Is A Headache , Sorry But Ok .

25. LynFran

ok using equation 2 |dw:1439786396300:dw|

26. LynFran

whats 6*8=?

27. anonymous

48

28. LynFran

|dw:1439786505063:dw|

29. LynFran

now we did this part a while ago do u remember... so how can we get y alone on 1 side of the equation we.....?

30. anonymous

No I Dont Honestly

31. LynFran

|dw:1439786750863:dw|

32. anonymous

Oh Yeaa

33. LynFran

what does y=? whats -27/ -3=?

34. anonymous

9

35. LynFran

correct do u have any question..

36. anonymous

Noo

37. anonymous

Thanks

38. LynFran

welcome please medal..by clicking on best response