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Saturday, October 30, 2010

When One Side of Inequality is Divided by a Value

Ex.
6a + 3 < -3
   -4
First multiply both sides by -4

6a + 3(-4) < -3(-4)
6a + 3 > 12

Now subtract 3 from both sides to isolate the coefficient 
6a - 3 > 12 -3
6a > 9

Now divide 6 from both sides to isolate the variable
6a > 9
6      6
a > 2/3

graph!


--(--------------------->
 2/3



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