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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.
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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 ?
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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|
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