## Markitos 2 years ago My teacher said i did these wrong can anyone explain how to properly solve these questions for me? it says i have to evaluate the expression i thought it was correct but now im confused 2. 5 |-4 + 3| = 15 3. -2 + 3 |-4| = -3 4. | -2 + -4| ----------- = 0 6 5. 3| -2+-6| + -3 = -8

1. SmokeysTheName

you have to get the absolute value sign alone first.

2. msingh

|dw:1359567381118:dw|

3. SmokeysTheName

so for number 2 divide 5 to both sides.

4. msingh

@Markitos , r u getting vat is done

5. msingh

|dw:1359567550593:dw|

6. msingh

@Markitos , solve the second part, and do take care of one thing that the expression which is in |dw:1359567749335:dw| sign becomes +ve when it is negative. this sign is called mod which converts -ve sign into +ve

7. Markitos

|dw:1359568063833:dw|

8. Markitos

and how does the -1 become a positive one?

9. msingh

because it is in mod sign , as i have already told that the expreesion in this mod sign becomes always +ve , if it is -ve

10. Markitos

ok

11. Markitos

what about the last part 5= 15

12. Markitos

or is it 5 | | 15

13. msingh

as LHS is not equal to the RHS So |dw:1359568254047:dw|

14. Markitos

and where does the 11 come from

15. Markitos

how would i type that in word

16. msingh

no there is no 11, when LHS is not equal to RHS, then we put equal sign but we place a cross sign on that first write equal sign

17. msingh

|dw:1359568380656:dw| like this

18. msingh

then draw a line which cuts it like this|dw:1359568409476:dw|

19. Markitos

ok

20. Markitos

got it

21. Markitos

now is am i finished with this one

22. msingh

yup

23. msingh

k.. do the second part, so that i should leave

24. Markitos

what do i need to do for the second part

25. msingh

solve it

26. Markitos

how

27. Markitos

im very bad at math can you explain to me how to

28. Markitos

i get the first part of what u said

29. msingh

-2 + 3 |-4| = -3 -2 + 3 (4) = -3 -2 +12 = -3

30. msingh

|dw:1359568963469:dw|

31. msingh

hope u understand and try the next parts also.

32. Markitos

ok i get that

33. Markitos

so if the number in the bracket is negative then it becomes positive and you put parenthesis around correct

34. Markitos

and how did you get the nine and 3

35. msingh

i just put the bracket to see the difference, it doesnot matter either u put bracket or not.

36. msingh

-2+12=9

37. msingh

i m leaving now, if any problem , then ask me later on

38. Markitos

ok and for this 2 + 3 (4) how did you get the 12

39. Markitos

ok

40. precal

|dw:1359576231730:dw|order of operation, you must multiply first then add