等比数列\(\{\)\(a_{n}\)\(\}\)中,若\(a\)\({\,\!}_{7}+\)\(a\)\({\,\!}_{8}+\)\(a\)\({\,\!}_{9}+\)\(a\)\({\,\!}_{10}= \dfrac{15}{8}\),\(a\)\({\,\!}_{8}·\)\(a\)\({\,\!}_{9}=- \dfrac{9}{8}\),则\( \dfrac{1}{a_{7}}+ \dfrac{1}{a_{8}}+ \dfrac{1}{a_{9}}+ \dfrac{1}{a_{10}}=\)________.