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 sir i dont understand this line ......

however when both inequalities are multiplied opr divided by a negative number then the sign of the inequality is reserved .. ????

Hi!
Here is the answer to your question.
 
When both sides of the inequality are multiplied or divided by a negative number, then the sign of the inequality is reversed.
 
Let us consider some examples to understand the concept.
 
 
 
 
Cheers!

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 It is not reserved but  " REVERSED"....

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 Truptilisa...it means that if both inequalities are multiplied or didvided by a negative number say -5x=15 then the solution will be:

-5x/-5 <15/-5 now in the next step the special character '<' will get reverse to '>':

 

now the solution will be: x>-3

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 Hope..this will help u...

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