If three points (2 vecp-vecq+3 vecr),(ve...

If three points `(2 vecp-vecq+3 vecr),(vecp-2 vecq+alpha vecr)` and `(beta vecp-5 vecq)` (where `vecp, barq, vecr` are non-coplanar vectors) are collinear, then the value of `1/(alpha+beta)` is

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