7.
如图,在\(\triangle ABC\)的边\(AB\)、\(AC\)上分别取点\(M\)、\(N\),使\( \overrightarrow{AM}= \dfrac {1}{3} \overrightarrow{AB}, \overrightarrow{AN}= \dfrac {1}{2} \overrightarrow{AC}\),\(BN\)与\(CM\)交于点\(P\),若\( \overrightarrow{BP}=λ \overrightarrow{PN}\),\( \overrightarrow{PM}=μ \overrightarrow{CP}\),则\( \dfrac {λ}{\mu }\)的值为\((\) \()\)