Answers

2014-07-29T01:38:19+05:30
30-x=x
=> 30=x+x
=> 30=2x
=> 30/2=x
=> x=15 ans.

1 5 1
2014-07-29T09:53:34+05:30
30-x=x
-x-x=-30
-2x=-30
By dividing both sides with negative:
2x=30
so x=30/2
       =15
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