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Mathematics 20 Online
OpenStudy (anonymous):

See question

OpenStudy (anonymous):

\[\left| 8-13 \right|-\left| -7-(-3)+1 \right|\]

OpenStudy (anonymous):

simplify

OpenStudy (diyadiya):

|8-13| - |-7 -(-3)+1 | First remove the parentheses

OpenStudy (diyadiya):

It will become |8-13| - |-7 + 3+1| is this clear?

OpenStudy (anonymous):

Yes, that part's clear.

OpenStudy (diyadiya):

Now tell me what is 8-13

OpenStudy (anonymous):

-5

OpenStudy (diyadiya):

Ok | | these two lines represent the absolute value absolute value of any number remains the same number (but positive value) you can read more about it here--> http://en.wikipedia.org/wiki/Absolute_value for example Absolute value of -2 is 2 and Absolute value of 2 is 2 itself so |-5| = ?

OpenStudy (anonymous):

5

OpenStudy (diyadiya):

Yes, so lets continue with the question |8-13| - |-7 + 3+1| =5 - |-7 + 3+1| can you do -7 + 3 +1 ?

OpenStudy (anonymous):

-3

OpenStudy (anonymous):

yes?

OpenStudy (diyadiya):

Yes, Don't forget its |-3| so ?

OpenStudy (anonymous):

So it's 3! :)

OpenStudy (diyadiya):

Yes ,But look at the question again we had 5-|-3|

OpenStudy (anonymous):

2

OpenStudy (diyadiya):

Yes, Thats the right answer :)

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