Posted by Ellen on Saturday, July 28, 2012 at 4:12pm.
5 ( x + 6 ) = 5 x + 30
12 x - 25 ¡Ý 3 x - 5 ( x + 6 )
12 x - 25 ¡Ý 3 x - ( 5 / x - 6 ) )
12 x - 25 3 x - ( 5 x + 30 )
12 x - 25 ¡Ý 3 x - 5 x - 30
12 x - 25 ¡Ý - 2 x - 30
Add 2 x to both dides
12 x - 25 + 2 x ¡Ý - 2 x + 2 x - 30
14 x - 25 ¡Ý - 30 Add 25 to both sides
14 x - 25 + 25 ¡Ý - 30 + 25
14 x ¡Ý - 5 Divide both sides by 14
x ¡Ý - 5 / 4
Remark:
¡Ý
mean greater or equal
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