Answer
$-10$
Work Step by Step
$\det A=(2\cdot2\cdot(-1))+((-3)\cdot2\cdot1)+(3\cdot3\cdot3)-(1\cdot2\cdot3)-(3\cdot2\cdot2)-((-1)\cdot3\cdot(-3))=(-4)+(-6)+27-6-12-9=-10$
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