SOLUTION: i dont know how to mulitply or change the sign when we do inequalities.thanks jg Justene Garcia

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Question 56857: i dont know how to mulitply or change the sign when we do inequalities.thanks
jg


Justene Garcia
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
When you multiply or divide both sides of an inequalty by a negative number, switch the sign.
Example:
-3x<6
-3x/-3>6/-3
x>-2 [The signed is switched because we divided both sides by a (-3)]
.
Example:
-1/2x>6
(-2/1)(-1/2)x>(-2/1)(6)
x>-12 [The signed is switched because we multiplied both sides by (-1/2)