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The fraction:

$$\cfrac { 3{ x }^{ 2 }-75 }{ 6{ x }^{ 2 }-36x+30 }$$

...can be re-written as which of the following simpler fractions?

(No Calculator)

$-\cfrac { 15 }{ 36x+8 } $

$\cfrac { x+5 }{ 2x-2 }$

$\cfrac { x-5 }{ 2x-2 }$

$\cfrac { x+5 }{ 3x-3 }$