## gabbyalicorn one year ago What is the value of x?

1. gabbyalicorn

2. gabbyalicorn

So, let me try this... |dw:1442025664039:dw|

3. gabbyalicorn

I feel like I only did it on one side.

4. Nnesha

how would you cancel out -8 from left side ? you should move all the numbers to the right side to solve for x

5. gabbyalicorn

I don't know I was just trying to do it the way @RigelCanopus show me. D:

6. Nnesha

oh for that question 6 was positive now to cancel out -8 from left side you should apply the opposite of subtraction

7. gabbyalicorn

showed*

8. gabbyalicorn

-8 + 8 ?

9. Nnesha

yes right add 8 both sides

10. gabbyalicorn

-16?

11. Nnesha

|dw:1442025848942:dw|

12. gabbyalicorn

|dw:1442025897208:dw|

13. Nnesha

yes right |dw:1442025923643:dw|

14. Nnesha

how how would you cancel out 4 from left side ? remember x is dividing by 4 so you should apply opposite of division

15. gabbyalicorn

|dw:1442026022881:dw|

16. Nnesha

what's that 4th root ? o.O

17. Nnesha

what is opposite of division ?

18. gabbyalicorn

oh, so sorry! multiplication. so 4 x 4?

19. Nnesha

yes right multiply both sides by 4 left you should multiply 4 times x/4

20. Nnesha

left side*

21. gabbyalicorn

Is the left side 20?

22. Nnesha

|dw:1442026136715:dw|

23. gabbyalicorn

Ah, I see. |dw:1442026173485:dw|

24. Nnesha

nope why we multiplied both sides by 4 ? so we cancel out 4 from left side right ?

25. Nnesha

$4 \times \frac{ x }{ 4}=\frac{ 4x }{ 4 }= ?$

26. gabbyalicorn

Hmm, I'm a little confuse on how figure to the problem...

27. Nnesha

4 times x/4 is same as 4/4 times x

28. gabbyalicorn

oh. |dw:1442026398432:dw|

29. Nnesha

yes right can't u cancel out something ?

30. gabbyalicorn

|dw:1442026442236:dw|

31. gabbyalicorn

Sp, we are left with 4x?

32. Nnesha

|dw:1442026436970:dw|

33. gabbyalicorn

16?

34. Nnesha

like i said we should multiply both sides by 4 so we can cancel out 4 from left side

35. Nnesha

4/4 = ?

36. gabbyalicorn

1? the / is confusing me

37. Nnesha

$4 \times \frac{ x }{ 4 }= \frac{ \color{Red}{4}x }{ \color{ReD}{4} }$ 4 times x/4 is same as 4/4 times x and 4/4 isn't 16

38. gabbyalicorn

what does the / represent?

39. Nnesha

here is an example $\huge\rm \cancel{3} \times \frac{ 2 }{\cancel{ 3} }$

40. Nnesha

division (fraction )

41. gabbyalicorn

ok.

42. Nnesha

so $\huge\rm \color{ReD}{\cancel{4}} \times \frac{ x }{ \cancel{4}}=20 \times \color{ReD}{4}$ when we multiply both sides by 4 at left side 4 would cancel each ohter out

43. gabbyalicorn

20 x 4= 80

44. gabbyalicorn

?

45. Nnesha

yes right

46. gabbyalicorn

:O :D :) Thank you!

47. Nnesha

np