Answers

2014-06-14T17:08:53+08:00
3(x-7)=24
3x-21=24
3x=24+21
3x=45
 \frac{3x}{3} =  \frac{45}{3}
x=15
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2014-06-14T17:19:10+08:00
3(x-7)
=3x-21
=15 is the right answer
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