# Easy product :)

Algebra Level 2

$x = (1-\frac { 1 }{ 2^{ 2 } } )(1-\frac { 1 }{ { 3 }^{ 2 } } )\quad ...\quad (1-\frac { 1 }{ { 15 }^{ 2 } } )$

If $$x$$ can be written as $$\frac{ a}{b}$$ where $$a$$ and $$b$$ are positive coprime integers, what is the value of $$a+b$$?

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