3.
阅读下面的计算过程:
\( \dfrac{1}{1+ \sqrt{2}} = \dfrac{1×\left( \sqrt{2}-1\right)}{\left( \sqrt{2}+1\right)\left( \sqrt{2}-1\right)} = \sqrt{2} -1\);
\( \dfrac{1}{ \sqrt{3}+ \sqrt{2}} = \dfrac{ \sqrt{3}- \sqrt{2}}{\left( \sqrt{3}+ \sqrt{2}\right)\left( \sqrt{3}- \sqrt{2}\right)} = \sqrt{3} - \sqrt{2} \);
\( \dfrac{1}{ \sqrt{5}+2} = \dfrac{ \sqrt{5}-2}{\left( \sqrt{5}+2\right)\left( \sqrt{5}-2\right)} = \sqrt{5} -2\)
\(…\)
根据以上信息,解答下面的问题:
\((1)\)化简\( \dfrac{1}{ \sqrt{7}+ \sqrt{6}} =\)__________\((\)直接写出结果\()\);
\((2)\)化简\( \dfrac{1}{ \sqrt{n+1}+ \sqrt{n}} =\)__________\((n\)为正整数,直接写出结果\()\);
\((3)\)利用上面所提供的解法计算:\(( \sqrt{2018}+1)( \dfrac{1}{ \sqrt{2}+1}+ \dfrac{1}{ \sqrt{3}+ \sqrt{2}}+⋯+ \dfrac{1}{ \sqrt{2017}+ \sqrt{2016}}+ \dfrac{1}{ \sqrt{2018}+ \sqrt{2017}}) \)