## Discord 3 years ago 2a - 4b = 6 a + 2b = -3 I need to solve by substitution.

1. iheartfood

Okay i'm here hahaa lemme see if i understand this :D

2. iheartfood

do the same thing as last time... get one variable by itself and you get |dw:1348539121996:dw|

3. iheartfood

you follow?

4. Discord

Oh wow.

5. Discord

I feel like an idiot.

6. iheartfood

yeah, so now u substitute into an equation hahaa and naww ur not an idiot!! haha :) i got confused with this earlier too but then i got help on OS and i get it now :D

7. iheartfood

|dw:1348539209962:dw| so u see what just happened??

8. iheartfood

|dw:1348539243473:dw|

9. iheartfood

what do you think now?

10. Discord

Right right. I think I can understand now.

11. iheartfood

12. iheartfood

@Discord ?? u there still?

13. Discord

Let me just finish working it out.

14. Discord

I'm using pen and paper.

15. iheartfood

okay haha but i just showed u the steps and work i did above... ohhhhh okay i see :D take ur time :D

16. iheartfood

@Discord what happened? I saw u were typing just now... :/

17. Discord

Haha thanks. I won't disappear. I promise

18. iheartfood

it's okay lol :) just wondering what happened

19. Discord

Sorry I'm used to just hitting enter and it sending the message. Its weird to have to hit post all the time.

20. iheartfood

yeah hahaa :) so what do u think the answer is and whY?

21. Discord

Well I did 2(-2b -3) - 4b = 6 And I got stuck.

22. iheartfood

exactly, because everything cancels out right?? take a look back up at the work i showed... notice how i crossed everything out?? because they cancelled out??

23. iheartfood

@Discord u there?

24. iheartfood

hi @hartnn what's up ?! :D

25. Discord

Yes yes sorry

26. hartnn

proceed ahead @Discord and distribute 2 inside the parenthesis

27. Discord

So if everything cancelled out what not?

28. Discord

*now

29. hartnn

everything DOES NOT cancel out

30. iheartfood

not eveyrthing , but the variables

31. hartnn

2(-2b -3) - 4b = 6 -4b -6 -4b = 6 then ?

32. iheartfood

my mistake for the one with =6, it becomes =12, but the variables are cancelled out, soooo what is ur answer @Discord and why?

33. Discord

Wait why is it 12?

34. hartnn

variables are not cancelled out @iheartfood

35. iheartfood

36. iheartfood

37. hartnn

now thats correct

38. iheartfood

and what are you gonna do to get b?

39. Discord

Do I add the two 4b's?

40. iheartfood

haha yeah sorry @hartnn and @Discord lol saw it wrong and stuff hahaa :) my baddddd ..... forgive me for my mistake?? :/ tehehee

41. iheartfood

what do you mean by 4bs?

42. iheartfood

|dw:1348540093318:dw| is that better?

43. Discord

Oh yeah.Now I get it.

44. iheartfood

mhmm so what is b?

45. iheartfood

|dw:1348540188906:dw| and now u figure it out and tell me and i will check it :)

46. Discord

b = -1.5

47. iheartfood

|dw:1348540295673:dw|

48. iheartfood

yes, correct

49. Discord

Yes!

50. iheartfood

now solve for a right? |dw:1348540336231:dw| i did that for u so tell me what the answer to a is.

51. iheartfood

haha yeah good job on figuring out b.. now what is a?

52. Discord

A equals zero?

53. iheartfood

yup!! so a=0, b= -1.5 (aka -3/2) good job!! do u understand now??

54. Discord

I believe so.

55. iheartfood

good job :) good luck!! :D

56. Discord

Thanks a lot. You are great.

57. iheartfood

awww thank you!!! :) And no problem :) glad to help!!