Answer
$-y-16$
Work Step by Step
The given expression, $
3[5(y-3)+9]-2(8y-1)
$, simplifies to
\begin{array}{l}\require{cancel}
3[5(y)+5(-3)+9]-2(8y)-2(-1)
\\\\=
3[5y-15+9]-16y+2
\\\\=
3[5y]+3[-15]+3[9]-16y+2
\\\\=
15y-45+27-16y+2
\\\\=
(15y-16y)+(-45+27+2)
\\\\=
-y+(-16)
\\\\=
-y-16
.\end{array}
