my dear brothers and sisters slove that blue colour box problem
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esbalaji:
slove this problem
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gn
b/a=c/b
y/x=z/y
y/x=z/x*z/y(y=x)
=2z/x+z
b/a=c/b
y/x=z/y
y/x=z/x*z/y(y=x)
=2z/x+z
its ok
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