Question

How do you rewrite this equation without the absolute bars ? ||-7|-|-9||

Answer 1

|-x| = x

Answer 2

| 7 - 9|
I have simplified one for you ...other is your one to do

Answer 3

so would it be 7+9?

Answer 4

No, Just do Normal subtraction inside mod | 7 - 9|

Answer 5

so |-2| which makes it 2?

Answer 6

Yeah Correct

Answer 7

thanks !

Answer 8

You did the Problem ..Thank You

Answer 9

so if its positive inside the bars does that make it negative?

Answer 10

|a| = a if a >=0
|a| = -a if a < 0

|-7| therefore equals 7
|-9| therefore equals 9

Therefore | |-7| - |-9| | = | 7-9 | = |-2|

Since -2 is less than 0 the |-2| equals 2

Answer 11

If it's positive it stays positive. If it is negative it changes sign.