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September 5, 2015

Homework Help: math

Posted by barb on Sunday, August 22, 2010 at 9:47pm.

5(3+4x)-6>=129
I get 2 different answers on this one.

15+20x-6>=129
15+20x-6+6>=129+6
15+20x>=135
15-15+20x>=135-15
20x>=120
20x/20>=120/20
x>=6
Is this worked out properly, are there any shortcuts?

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